Patent US3170891A successfully refreshed from Google Patents.
US3170891A
Expired / Lapsed
US
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Silicone isocyanates
Assignee: Dow Silicones Corp
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Filing: 1962-09-14
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Granted: 1965-02-23
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Expires: 1982-09-14
Abstract
No abstract record available.
Inventors
- 👤 John L Speier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:44
CPC Classifications
C; C08; C08G; C08G77/00; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C07F7/0825; C07F7/0827; C07F7/0829; C07F7/0834; C07F7/0838; C07F7/18; C07F7/1804; C08G18/00; C08G18/06; C08G18/70; C08G18/71; C08G18/718; C08G18/72; C08G18/77; C08G18/778; C08G77/04; C08G77/22; C08G77/26; C08G77/48
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
12 words
A COMPOSITION OF MATTER COMPRISING (1) AN ORGANOSILICON COMPOUND OF THE STRUCTURE
References Cited (Backward Citations)
DE1066582B
Cited
US3113146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |