Inventor
David Charles Darwin
Inventor
Columbia, MD, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia33%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds27%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds15%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients9%
A01NPreservation of bodies of humans or animals or plants or parts thereof3%
B27KProcesses, apparatus or selection of substances for impregnating, staining, dyeing, bleaching of wood or similar materials, or treating of wood or similar materials with permeant liquids, not otherwise provided for3%
C08JWorking-up3%
C09DCoating compositions, e.g. paints, varnishes or lacquers3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
9,125,403'Waterproofing and preservative compositions for organic material'20157,670,415'Vapor barrier for porous structures and system'20106,139,623'Emulsified comb polymer and defoaming agent composition and method of making same'20005,840,114'High early-strength-enhancing admixture for precast hydraulic cement and compositions containing same'19985,753,744'Cement and cement composition having improved rheological properties'19985,728,207'Cement admixture product having improved rheological properties and process of forming same'19985,725,657'Cement admixture product'19985,665,158'Cement admixture product'19975,643,978'Cement admixture product having improved rheological properties and process of forming same'19975,633,298'Cement admixture product having improved rheological properties and process of forming same'19975,583,183'Cement and cement composition having improved rheological properties'19965,393,343'Cement and cement composition having improved rheological properties'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–2000Patents assigned to GRACE W R & CO (9)· patent assignee history
1995–2000Based in Columbia, MD, US· patent location history
2010–2015Patents assigned to HYCRETE INC (2)· patent assignee history
2010–2015Based in Wayne, NJ, US· patent location history
2015Patents assigned to DARWIN DAVID C (1)· patent assignee history
2015Patents assigned to RHODES PHILIP S (1)· patent assignee history
2015Patents assigned to TUERACK JASON S (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GRACE W R & CO | 9 | 1995–2000 |
| HYCRETE INC | 2 | 2010–2015 |
| DARWIN DAVID Cself | 1 | 2015 |
| RHODES PHILIP S | 1 | 2015 |
| TUERACK JASON S | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Columbia, Maryland, US | 10 | 1995–2000 |
| Wayne, New Jersey, US | 2 | 2010–2015 |