US3156576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isocyanate modified pigments
Assignee: Individual
•
Filing: 1956-07-30
•
Granted: 1964-11-10
•
Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Grotenhuis Theodore A Te
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:58
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/08; C01; C01P; C01P2004/00; C01P2004/50; C01P2004/80; C01P2006/00; C01P2006/12; C01P2006/20; C01P2006/90
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
AN INORGANIC PIGMENT, WHICH HAS FREELY MOVILE PARTICLES FREE OF BINDER SUITABLE FOR INCORPORATION IN RUBBERY POLYMERS, HAVING OVER SURFACE PORTIONS THEREOF A RESIDUE FROM THE REACTION OF THE SURFACE OF SAID PIGMENT WITH AN AMOUNT OF AN ORGANIC POLYISOCYANATE THAT RENDERS THE PIGMENT HYDROPHOBIC, SAID POLYISOCYANATE BEING FREE OF ALIPHATIC UNSATURATION AND HAVING A PLURALITY OF ISOCYANATO GROUPS ATTACHED DIRECTLY TO AN ORGANIC GROUP WHICH IS FREE OF FUNCTIONAL GROUPS OTHER THAN ISOCYANATO GROUPS.
References Cited (Backward Citations)
FR885875A
Cited
US1894168A
Cited
US2036570A
Cited
US2402962A
Cited
US2663650A
Cited
US2705206A
Cited
FR1092695A
Cited
US2789919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |