US3256308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-methyl-1, 3-dioxa-2-sila-cyclohept-5-ene
Assignee: Dow Chemical Co
•
Filing: 1962-03-05
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Granted: 1966-06-14
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 George B Sterling
- 👤 Chester E Pawloski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:44
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/06; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08F30/00; C08F30/04; C08F30/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND 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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |