us patent application for delayed polyacrylamide in egypt

us patent application for delayed polyacrylamide-co-aluminum

US Patent Application for DELAYED POLYACRYLAMIDE-CO-ALUMINUM

A delayed gelling system useful in conformance control in the production of petroleum from subterranean formations is disclosed. The gelling system comprises an acidic aqueous solution of acid-soluble or cationic polyacrylamide, an at least partially neutralized acid aluminum salt, an activator comprising a hydroxyl donor, and an optional gel modifier.

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us4744418a - delayed polyacrylamide gelation process for oil

US4744418A - Delayed polyacrylamide gelation process for oil

A process for delaying the gelation rate of a polymer used in oil recovery applications. A gel is prepared by mixing a single aqueous gelation solution at the surface made up of a polyvalent metal cross-linking agent and a polyacrylamide having no hydrolysis or only a limited degree of hydrolysis.

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us5069281a - process for enhanced delayed in situ gelation of

US5069281A - Process for enhanced delayed in situ gelation of

US United States Prior art keywords gelation polyacrylamide solution formation buffer Prior art date 1990-11-05 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number

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us patent application for dual-use, dual-function

US Patent Application for DUAL-USE, DUAL-FUNCTION

Justia Patents US Patent Application for DUAL-USE, DUAL-FUNCTION POLYACRYLAMIDE PROPPANT SUSPENDING AGENT FOR FLUID TRANSPORT OF HIGH CONCENTRATIONS OF PROPPANTS Patent Application (Application #20190316032)

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ep1418188b1 - polyacrylamide hydrogel and its use as an

EP1418188B1 - Polyacrylamide hydrogel and its use as an

European Patent Office Prior art keywords hydrogel polyacrylamide endoprosthesis acrylamide weight Prior art date 2000-08-25 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number

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us3002960a - polyacrylamide preparation - google patents

US3002960A - Polyacrylamide preparation - Google Patents

US United States Prior art keywords viscosity water polyacrylamides flooding polyacrylamide Prior art date 1958-08-18 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number

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us7621335b2 - viscosity breaker for polyacrylamide friction

US7621335B2 - Viscosity breaker for polyacrylamide friction

US United States Prior art keywords viscosity treating fluid well treating peroxide water Prior art date 2006-06-08 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number US11/756,293

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us patent application for modified foot-and-mouth disease

US Patent Application for Modified Foot-And-Mouth Disease

The United States Government has certain rights in this invention. SEQUENCE LISTING. The instant application contains a Sequence Listing which has been submitted in ASCII format via EFS-Web and is hereby incorporated by reference in its entirety. The ASCII copy is named DHS-078_Sequence_Listing.txt and is 78 KB in size. BACKGROUND Field of the

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compositions and methods for inactivating or suppressing

Compositions and methods for inactivating or suppressing

United States Patent Application 20070041992 polyacrylamide gel, or by HPLC analysis. and 10% in Egypt (Alberti A. et al. Natural history of hepatitis C. J

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us8420576b2 - hydrophobically and cationically modified

US8420576B2 - Hydrophobically and cationically modified

Methods comprising introducing a hydrophobically and cationically modified relative permeability modifier into a portion of a subterranean formation. The hydrophobically and cationically modified relative permeability modifier comprises a hydrophilic polymer backbone with a hydrophobic modification and a cationic modification.

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us7589048b2 - methods and compositions for reducing the

US7589048B2 - Methods and compositions for reducing the

The present invention relates to subterranean treatment fluids, and more particularly, the present invention relates to subterranean treatment fluids comprising relative permeability modifiers and methods for using such subterranean treatment fluids in subterranean operations to reduce the production of water from and stimulate hydrocarbon production in a subterranean formation.

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swelling of radiation crosslinked acrylamide-based microgels

Swelling of radiation crosslinked acrylamide-based microgels

Commercial polyacrylamide PAAm supplied from El-Nasser Co. Egypt—molecular weight over 5 000 000 and viscosity (0.5% aqueous solution at 50 °C) 282 cP—was used. Powder of 0.3 mm particle size was covered with stainless steel net and dried in a vacuum oven at 45 °C for 24 h before its use.2.2.

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patents assigned to aquasmart enterprises, llc - justia

Patents Assigned to Aquasmart Enterprises, LLC - Justia

Abstract: A composite, time-delayed, polymer-coated, granulated material for maintaining hydration in plants is formulated to delay acceptance of water in order to operate in drilling, plugging, and disking equipment used for aeration, soil amendment, or both. Whether potted or outdoors, whether relying on a third-material binder or a small

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pct national phase entry in usa – ip guide – ip coster

PCT National phase entry in USA – IP Guide – IP Coster

The time limit for the PCT national phase entry in the United States of America is 30 months from the date of priority. The national stage can be revived if a petition and fee are filed within two months. Filing requirements in the U.S. The official language of the U.S. patent application is English. If the international application is filed in

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patent - ctr intellectual property co. - trademark, patent

Patent - CtR Intellectual Property Co. - Trademark, Patent

The patent application might be rejected or delayed for the following reasons: 1) Wrong filing due to language barrier and lack of professional knowledge in patent application. 2) Improper filling the application documents without the guidance of a professional agent. 3) Improper handling of rejected application due to delay to receive official

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beware of foreign filing license  - patents & patent law

Beware of Foreign Filing License - Patents & Patent Law

Most U.S. patent practitioners are keenly aware of the foreign filing license requirement for filing of U.S. patent applications abroad. Since it is common for U.S. based companies to file a U.S

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compositions and methods for inactivating or suppressing

Compositions and methods for inactivating or suppressing

United States Patent Application 20070041992 polyacrylamide gel, or by HPLC analysis. and 10% in Egypt (Alberti A. et al. Natural history of hepatitis C. J

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the global patent pendency problem

The Global Patent Pendency Problem

patent delay. While some patent offices are working hard on the problem, it’s time to recognize that this is a growing global problem. Unless prompt action is taken, it’s likely to get worse before it gets better, given the growing number of applications worldwide. Debates about treaty compliance, measures for reform

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the application of gels in enhanced oil recovery: theory

The Application of Gels in Enhanced Oil Recovery: Theory

Well Bore Gelation Time United States Patent Profile Modification Hydrolyze Polyacrylamide These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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method of treatment or prophylaxis of infections of the eye

METHOD OF TREATMENT OR PROPHYLAXIS OF INFECTIONS OF THE EYE

A microbial infection in an eye of a subject is treated or prevented by topically administering to the eye an effective amount of a macromolecule or a pharmaceutically acceptable salt thereof that includes a dendrimer of 1 to 8 generations with one or more sulfonic acid- or sulfonate-containing moieties attached to one or more surface groups of the outermost generation of the dendrimer.

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cusma: canadian patent applications to be eligible for patent

CUSMA: Canadian Patent Applications To Be Eligible For Patent

According to the Canada-United States-Mexico Agreement (CUSMA) 1, Canadian patent applications filed on or after December 1, 2020 2, may be eligible for patent term adjustment (PTA) if they have been subjected to unreasonable prosecution delay by the Canadian Intellectual Property Office (CIPO) 3.

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method of removing oil-based barite filter cake - king fahd

METHOD OF REMOVING OIL-BASED BARITE FILTER CAKE - KING FAHD

1. 1-11. (canceled) 12. A single-step method of dissolving an oil-based filter cake in a wellbore, comprising: contacting the oil-based filter cake in the wellbore with a composition for 18-30 h, wherein at least 80 wt % of the oil-based filter cake dissolves with respect to a total weight of the filter cake prior to the contacting, wherein the oil-based filter cake comprises 30-90 wt % barium

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evaluation of polyacrylamide gels with accelerator ammonium

Evaluation of polyacrylamide gels with accelerator ammonium

In field application, gelling solutions are usually prepared in large tanks that may contain corrosion products like Fe 3+, especially when residual acid is available at the bottom of the tank. Fe 3+ is a trivalent cation similar to Al 3+ , Cr 3+ , Ti 4+ and Zr 4+ that can interact with polymer molecules and affect the gelation performance.

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designs | free full-text | an analysis of the intellectual

Designs | Free Full-Text | An Analysis of the Intellectual

In the United States, the interval between consideration of an application and the issuance of a patent takes from 1 to 1.5 years. Analysis of the patent activity of the three leading countries allows us to conclude that the intellectual property market in the field of enhanced oil recovery methods has not yet stabilized.

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