US3113146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isocyanates containing silicon
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1961-05-01
•
Granted: 1963-12-03
•
Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Fielding Harold Crosbie
- 👤 Pollock John Maclelland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:51
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/22; C07F9/24; C07F9/2454; C07F9/2479; C07F9/2487; C07F7/00; C07F7/02; C07F7/025; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
32 words
PROCESS FOR MAKING ISOCYANATES CONTAINING SILICON ATOMS COMPRISING REACTING UNDER SUBSTANTIALLY MOISTUREFREE CONDITIONS SILICON TETRA-ISOCYANATE WITH AN ALKYLENE OXIDE CHOSEN FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE AND STYRENE OXIDE.
Claim 2
Dependent Claim
32 words
PROCESS FOR MAKING ISOCYANATES CONTAINING SILICON ATOMS COMPRISING REACTING UNDER SUBSTANTIALLY MOISTUREFREE CONDITIONS SILICON TETRA-ISOCYANATE WITH AN ALKYLENE OXIDE CHOSEN FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE AND STYRENE OXIDE.
Claim 3
Dependent Claim
8 words
AN ISOCYANATE CONTAINING SILICON AND HAVING THE FORMULA
Claim 4
Dependent Claim
8 words
AN ISOCYANATE CONTAINING SILICON AND HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |