US2689859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorinated organopolysiloxanes
Assignee: General Electric Co
•
Filing: 1950-02-24
•
Granted: 1954-09-21
•
Expires: 1970-02-24
Abstract
No abstract record available.
Inventors
- 👤 Charles A Burkhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:46
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/24; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A LIQUID LINEAR POLYSILOXANE CORRESPONDING TO A GENERAL FORMULA
Claim 2
Dependent Claim
9 words
A LIQUID LINEAR POLYSILOXANE CORRESPONDING TO A GENERAL FORMULA
References Cited (Backward Citations)
US2258219A
Cited
US2258222A
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US2469890A
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US2469888A
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US2457677A
Cited
US2599984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |