David E. Laycock — 9 Patents | Patent Leaderboard

David E. Laycock has been granted 9 US patents. The first was granted in 1990 and the most recent in November 2003. David E. Laycock ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list David E. Laycock in Sarnia, ON, CA.

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6642423	Polymerization of ethylene oxide using metal cyanide catalysts	Katherine S. Clement, Louis L. Walker, Richard M. Wehmeyer, Robert H. Whitmarsh, David C. Molzahn +3 more	2003-11-04	$43,929,000
6429342	Polymerization of ethylene oxide using metal cyanide catalysts	Katherine S. Clement, Louis L. Walker, Richard M. Wehmeyer, Robert H. Whitmarsh, David C. Molzahn +1 more	2002-08-06	$47,742,000
6388048	Complexing agent-modified trimetal cyanide catalyst	Kendra L. Flagler, Robert J. Gulotty, Jr.	2002-05-14	$43,311,000
6384183	Metal hexacyanocobaltate nitroferricyanide complexes	Kendra L. Flagler, Robert J. Gulotty, Jr.	2002-05-07	$32,485,000
6376645	Complexing agent-modified hexacyanometallate hexanitrometallate catalysts	Kendra L. Flagler, Robert J. Gulotty, Jr.	2002-04-23	$15,500,000
6358877	Metal catalysts complexed with sulfone or sulfoxide compounds	Kendra L. Flagler	2002-03-19	$27,766,000
5374705	Process for the preparation of polyether polyols with a reduced unsaturation content	Robert A. Sewell	1994-12-20	$5,643,000
4962237	Catalytic process for the preparation of polyols	—	1990-10-09	$1,716,000
4962281	Synthesis of stereoregular poly(propylene oxide)	—	1990-10-09	$1,716,000

David E. Laycock — 9 Patents

Issued Patents All Time

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