Patent US2129880A successfully refreshed from Google Patents.
US3185663A
Expired / Lapsed
US
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Cyanoalkyl polysiloxanes
Assignee: General Electric Co
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Filing: 1953-12-31
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Granted: 1965-05-25
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Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Prober Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:05
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/38; C08G77/382; C08G77/388; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/21; C08G77/22; C08G77/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
ORGANOPOLYSILOXANES CONSISTING ESSENTIALLY OF THE RECURRING STRUCTURAL UNIT
Claim 2
Dependent Claim
11 words
AN ORGANOPOLYSILOXANE ELASTOMER CONSISTING ESSENTIALLY OF RECURRING METHYL CYANOMETHYL SILOXANE UNITS.
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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |