US3294737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxanes
Assignee: General Electric Co
•
Filing: 1963-12-23
•
Granted: 1966-12-27
•
Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Krantz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:30
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/42; C08G77/44; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A BLOCK COPOLYMER COMPRISING BLOCKS OF (A) JOINED BY SILOXANE LINKAGES TO BLOCKS OF (B), WHERE (A) IS THE CONDENSATION PRODUCT OF REACTION OF A HYDROXYL-TERMINATED POLYMER OF THE FORMULA,
Claim 2
Dependent Claim
30 words
A BLOCK COPOLYMER COMPRISING BLOCKS OF (A) JOINED BY SILOXANE LINKAGES TO BLOCKS OF (B), WHERE (A) IS THE CONDENSATION PRODUCT OF REACTION OF A HYDROXYL-TERMINATED POLYMER OF 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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |