Engelhardt; Friedrich

Patent Applications and Registrations

Patent applications and USPTO patent grants for Engelhardt; Friedrich.The latest application filed is for "stabilized aqueous polymer compositions and their use".

Company Profile

0.31.5

Engelhardt; Friedrich - Frankfurt N/A DE
Engelhardt; Friedrich - Chesapeake VA
Engelhardt, Friedrich - Frankfurt/Main DE
Engelhardt; Friedrich - Frankfurt am Main DE

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Stabilized aqueous polymer compositions and their use Grant 8,962,715 - Engelhardt , et al. February 24, 2	2015-02-24
Hydrogels absorbing aqueous fluids Grant 8,552,071 - Daniel , et al. October 8, 2	2013-10-08
Stabilized aqueous polymer compositions Grant 7,842,741 - Engelhardt , et al. November 30, 2	2010-11-30
Stabilized aqueous polymer compositions and their use App 20100075871 - Engelhardt; Friedrich ; et al.	2010-03-25
Plasticized superabsorbent polymer sheets and use thereof in hygienic articles Grant 7,662,460 - Herfert , et al. February 16, 2	2010-02-16
Stabilized aqueous polymer compositions App 20090192055 - Engelhardt; Friedrich ; et al.	2009-07-30
Polymer mixtures with improved odor control Grant 7,132,479 - Engelhardt , et al. November 7, 2	2006-11-07
Plasticized superabsorbent polymer sheets and use thereof in hygienic articles App 20050153123 - Herfert, Norbert ; et al.	2005-07-14
Polymer mixtures with improved odor control App 20050154133 - Engelhardt, Friedrich ; et al.	2005-07-14
Hydrophilic hydrogels with a high swelling capacity and method for producing and using them Grant 6,602,950 - Dentler , et al. August 5, 2	2003-08-05
Absorbent article App 20030135172 - Whitmore, Darryl L. ; et al.	2003-07-17
Mechanically stable hydrogel-forming polymers Grant 6,414,214 - Engelhardt , et al. July 2, 2	2002-07-02
Process for modifying hydrophilic polymers Grant 6,300,423 - Engelhardt , et al. October 9, 2	2001-10-09
Hydrophilic, highly swellable hydrogels Grant 5,331,059 - Engelhardt , et al. * July 19, 1	1994-07-19
Alkenylphosphonic and --phosphinic acid esters, process for their preparation, hydrogels produced using them, and their use Grant 5,066,745 - Engelhardt , et al. November 19, 1	1991-11-19
Hydrophilic swellable graft copolymers, their preparation and use Grant 5,011,892 - Engelhardt , et al. April 30, 1	1991-04-30
Alkenylphosphonic and -phosphinic acid esters, process for their preparation, hydrogels produced using them, and their use Grant 4,959,441 - Engelhardt , et al. September 25, 1	1990-09-25
Process for the preparation of a hydrogel which is largely free from monomers Grant 4,794,166 - Engelhardt , et al. December 27, 1	1988-12-27
Water-soluble polycoesters, process for their preparation, and their use Grant 4,736,014 - Engelhardt , et al. April 5, 1	1988-04-05
Cement slurries for deep holes, with a copolymer content for reducing the water loss Grant 4,587,283 - Hille , et al. May 6, 1	1986-05-06
Phosphonic acid cross-linked hydrophilic copolymers Grant 4,585,845 - Engelhardt , et al. April 29, 1	1986-04-29
Metal chelates of water soluble copolymers Grant 4,518,745 - Engelhardt , et al. May 21, 1	1985-05-21
Cross-linkable and cross linked macromolecular compositions wherein cross-linking is by structural bridges of the formula --NR.sup.x --CH.dbd.N--CO-- and their preparation Grant 4,507,440 - Engelhardt , et al. March 26, 1	1985-03-26
Water soluble copolymers for use in fracture-acidizing of wells Grant 4,500,437 - Engelhardt , et al. February 19, 1	1985-02-19
Water soluble, crosslinkable polymer compositions, their preparation and use Grant 4,499,232 - Engelhardt , et al. February 12, 1	1985-02-12
Water-dispersible polyester, its preparation, and its use as a hydrophiling agent Grant 4,463,165 - Engelhardt , et al. July 31, 1	1984-07-31
Agent and method for deoiling sand and rock masses Grant 4,451,631 - Engelhardt , et al. May 29, 1	1984-05-29
Drag reducing agents Grant 4,407,321 - Wilski , et al. October 4, 1	1983-10-04
Water-soluble copolymer and its preparation Grant 4,357,245 - Engelhardt , et al. November 2, 1	1982-11-02
Dyeing of mixed fibers Grant 4,323,363 - Brachten , et al. April 6, 1	1982-04-06
Water-soluble copolymer of acrylamidomethylpropanesulfonic acids salts Grant 4,309,523 - Engelhardt , et al. January 5, 1	1982-01-05
Use of cross-linked polymers to increase the viscosity in cosmetic, pharmaceutical and technical compositions Grant 4,237,243 - Quack , et al. December 2, 1	1980-12-02
Polyacrylamide particles coated with a powder Grant 3,876,573 - Engelhardt , et al. April 8, 1	1975-04-08
Covered asbestos-cement products Grant 3,865,683 - Schnee , et al. February 11, 1	1975-02-11

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