Walker; Leigh E.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Walker; Leigh E..The latest application filed is for "in situ process for making quaternary ammonium bicarbonates and quaternary ammonium carbonates".

Company Profile

0.17.4

Walker; Leigh E. - Macungie PA
Walker; Leigh E. - Lewiston NY

*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
Method of preparing quaternary ammonium hydroxide and quaternary ammonium carbonate in an aminoalcohol solvent Grant 7,057,070 - Tseng , et al. June 6, 2	2006-06-06
In situ process for preparing quaternary ammonium bicarbonates and quaternary ammonium carbonates Grant 6,989,459 - Walker January 24, 2	2006-01-24
In situ process for preparing quaternary ammonium bicarbonates and quaternary ammonium carbonates Grant 6,784,307 - Walker August 31, 2	2004-08-31
In situ process for making quaternary ammonium bicarbonates and quaternary ammonium carbonates App 20040162343 - Walker, Leigh E.	2004-08-19
Amine oxide wood preservatives Grant 6,572,788 - Walker June 3, 2	2003-06-03
Azole/amine oxide preservatives Grant 6,527,981 - Tseng , et al. March 4, 2	2003-03-04
Boron compound/amine oxide compositions App 20020065206 - Tseng, Chuen-Ing ; et al.	2002-05-30
Methods for enhancing penetration of wood preservatives App 20020061366 - Walker, Leigh E. ; et al.	2002-05-23
Amine oxide wood preservatives App 20020026883 - Walker, Leigh E.	2002-03-07
Quaternary ammonium carboxylate and borate compositions and preparation thereof Grant 6,087,303 - Walker July 11, 2	2000-07-11
Waterproofing and preservative compositons for wood Grant 5,833,741 - Walker November 10, 1	1998-11-10
Quaternary ammonium hydroxide compositions and preparation thereof Grant 5,760,088 - Walker June 2, 1	1998-06-02
Quaternary ammonium carbonate compositions and preparation thereof Grant 5,438,034 - Walker August 1, 1	1995-08-01
Graft polymers of polymerizable monomers and olefin polymers Grant 4,806,581 - Walker February 21, 1	1989-02-21
Graft polymers of polymerizable monomers and olefin polymers Grant 4,661,549 - Walker April 28, 1	1987-04-28
Blends of polyolefin-vinyl chloride graft polymers and condensation polymers Grant 4,587,297 - Walker , et al. May 6, 1	1986-05-06
Blends of polyolefin graft polymers and SMA polymers Grant 4,562,229 - Walker , et al. December 31, 1	1985-12-31
Blends of polyolefin graft polymers and ASA polymers Grant 4,537,933 - Walker , et al. August 27, 1	1985-08-27
Graft polymers of polymerizable monomers and olefin polymers Grant 4,536,545 - Olener , et al. August 20, 1	1985-08-20
Method of preparing vinyl halide polymers and copolymers with polyolefins Grant 4,195,137 - Walker * March 25, 1	1980-03-25
Method of preparing vinyl halide polymers and copolymers with polyolefins Grant 4,067,928 - Walker * January 10, 1	1978-01-10

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