Inventor
Keith Douglas Campbell
Inventor
Slatington, PA, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere19%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1019%
B01DSeparation13%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds13%
C08JWorking-up13%
B05DProcesses for applying fluent materials to surfaces, in general6%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%
C09JAdhesives6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
PatentTitleYear
9,617,453'Solvent free aqueous polyurethane dispersions and methods of making and using the same'20177,482,676'Compositions for preparing low dielectric materials'20097,294,585'Compositions for preparing low dielectric materials'20077,122,880'Compositions for preparing low dielectric materials'20065,326,809'Poly[(vinyl alcohol)-CO-(vinyl amine)] copolymers as stabilizing protective colloids in aqueous emulsion polymerization'19945,073,175'Fluorooxidized polymeric membranes for gas separation and process for preparing them'19915,013,338'Plasma-assisted polymerization of monomers onto polymers and gas separation membranes produced thereby'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2017Patents assigned to AIR PROD & CHEM (7)· patent assignee history
1991–2017Based in Slatington, PA, US· patent location history
2017Patents assigned to CAMPBELL KEITH DOUGLAS (1)· patent assignee history
2017Patents assigned to FAZEL SHAFIQ NISARALI (1)· patent assignee history
2017Patents assigned to ZHENG SHIYING (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AIR PROD & CHEM | 7 | 1991–2017 |
| CAMPBELL KEITH DOUGLASself | 1 | 2017 |
| FAZEL SHAFIQ NISARALI | 1 | 2017 |
| ZHENG SHIYING | 1 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Slatington, Pennsylvania, US | 7 | 1991–2017 |