Patent US3011987A successfully refreshed from Google Patents.
US3011987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosiloxane copolymers
Assignee: Union Carbide Corp
•
Filing: 1957-11-29
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Granted: 1961-12-05
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Expires: 1977-11-29
Abstract
No abstract record available.
Inventors
- 👤 Richard K Walton
- 👤 Ralph F Sellers
- 👤 Jr William G Colclough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
PARTIALLY CONDENSED ORGANOSILOXANE COPOLYMERS CONTAINING STRUCTURAL UNITS WHICH ARE REPRESENTED BY THE FORMULAE:
Claim 2
Dependent Claim
13 words
PARTIALLY CONDENSED ORGANOSILOXANE COPOLYMERS CONTAINING STRUCTURAL UNITS WHICH ARE REPRESENTED BY THE FORMULAE:
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |