Leigh E. Walker — 31 Patents at Lonza

Leigh E. Walker has been granted 31 US patents while listed as an inventor at Lonza. The first was granted in 1980 and the most recent in September 2013. Leigh E. Walker ranks #115,823 of 4,157,543 US inventors in our database (top 2.8%). Patent records list Leigh E. Walker in Lewiston, NY, US.

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8530064	Mold-inhibiting method and composition comprising dehydroacetic acid or salt thereof	Xiao Jiang	2013-09-10
7057070	Method of preparing quaternary ammonium hydroxide and quaternary ammonium carbonate in an aminoalcohol solvent	Chuen-Ing Tseng	2006-06-06
6989459	In situ process for preparing quaternary ammonium bicarbonates and quaternary ammonium carbonates	—	2006-01-24
6784307	In situ process for preparing quaternary ammonium bicarbonates and quaternary ammonium carbonates	—	2004-08-31
6572788	Amine oxide wood preservatives	—	2003-06-03
6527981	Azole/amine oxide preservatives	Chuen-Ing Tseng	2003-03-04
6508869	Boron compound/amine oxide compositions	Chuen-Ing Tseng, Charles Conrad Kempinska, Jr.	2003-01-21
6485790	Methods for enhancing penetration of wood preservatives	Shilan Shen	2002-11-26
6448279	Isothiazolone/amine oxide wood preservatives	Chuen-Ing Tseng	2002-09-10
6375727	Amine oxide/iodine containing blends for wood preservation	—	2002-04-23
6340384	Copper/amine oxide wood preservatives	—	2002-01-22
6090855	Quaternary ammonium carbonate compositions and preparation thereof	—	2000-07-18
6087303	Quaternary ammonium carboxylate and borate compositions and preparation thereof	—	2000-07-11
5891921	Quaternary ammonium carboxylate and borate compositions and preparation thereof	—	1999-04-06
5855817	Waterproofing and preservative compositions and preparation thereof	—	1999-01-05
5833741	Waterproofing and preservative compositons for wood	—	1998-11-10
5760088	Quaternary ammonium hydroxide compositions and preparation thereof	—	1998-06-02
5700841	Quaternary ammonium carboxylate and borate compositions and preparation thereof	—	1997-12-23
5641726	Quaternary ammonium carboxylate and borate compositions and preparation thereof	—	1997-06-24
5559155	Quaternary ammonium hydroxide compositions and preparation thereof	—	1996-09-24
5523487	Quaternary ammonium carbonate compositions and preparation thereof	—	1996-06-04
5438034	Quaternary ammonium carbonate compositions and preparation thereof	—	1995-08-01
5399762	Quaternary ammonium hydroxide compositions and preparation thereof	—	1995-03-21
4806581	Graft polymers of polymerizable monomers and olefin polymers	—	1989-02-21	$31,161,000
4661549	Graft polymers of polymerizable monomers and olefin polymers	—	1987-04-28	$35,434,000

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Leigh E. Walker — 31 Patents

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