Patent US3277135A successfully refreshed from Google Patents.
US3277135A
Expired / Lapsed
US
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Method for preparing organosilanes
Assignee: Air Products and Chemicals Inc
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Filing: 1962-05-25
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Granted: 1966-10-04
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Expires: 1982-05-25
Abstract
No abstract record available.
Inventors
- 👤 William A Harding
- 👤 Shalit Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:51
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/0825; C07F7/0827; C07F7/0829; C09; C09D; C09D7/00; C09D7/40; C09D7/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
THE METHOD OF PREPARING COMPOUNDS HAVING THE FORMULA:
Claim 2
Independent Claim
8 words
THE METHOD OF PREPARING COMPOUNDS HAVING 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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |