Inventor
Douglas R. Leach
Inventor
Hockessin, DE, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds30%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices25%
B41MPrinting, duplicating, marking, or copying processes20%
C08JWorking-up15%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds5%
H01HElectric switches5%
PatentTitleYear
9,761,383'Manual transfer switch interlock device'20176,403,269'Photosensitive compositions and clean running photopolymer printing plates therefrom'20026,399,278'Photosensitive compositions and clean running photopolymer printing plates'20026,214,522'Photosensitive resin composition useful in fabricating printing plates'20016,197,459'Photosensitive resin composition useful in fabricating printing plates'20015,965,460'Polyurethane composition with (meth)acrylate end groups useful in the manufacture of polishing pads'19995,688,633'Soft relief photopolymer printing plates for flexographic printing'19975,480,940'Polydicyclopentadiene having improved stability and toughened with polymeric particles'19964,708,969'Cycloolefin composition and method for making high TG fiber reinforced polymeric product'19874,598,102'Method, composition and product produced by delayed gelation in the polymerization of cycloolefins'19864,496,669'Method of making cellular crosslinked poly(dicyclopentadiene)'19854,458,037'Method of making cellular crosslinked poly(dicyclopentadiene)'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1987Patents assigned to HERCULES INC (4)· patent assignee history
1984–1987Based in Newark, DE, US· patent location history
1996Patents assigned to METTON AMERICA INC (1)· patent assignee history
1996–1997Based in Wilmington, DE, US· patent location history
1997Patents assigned to MACDERMID IMAGING TECHNOLOGY (1)· patent assignee history
1999–2001Patents assigned to MACDERMID INC (3)· patent assignee history
1999–2002Based in Hockessin, DE, US· patent location history
2017Patents assigned to MILBANK MFG CO (1)· patent assignee history
2017Based in Kansas City, MO, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HERCULES INC | 4 | 1984–1987 |
| MACDERMID INC | 3 | 1999–2001 |
| MACDERMID IMAGING TECHNOLOGY | 1 | 1997 |
| METTON AMERICA INC | 1 | 1996 |
| MILBANK MFG CO | 1 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hockessin, Delaware, US | 5 | 1999–2002 |
| Newark, Delaware, US | 4 | 1984–1987 |
| Wilmington, Delaware, US | 2 | 1996–1997 |
| Kansas City, MO, US | 1 | 2017 |