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Patent US3277182A successfully refreshed from Google Patents.
US3277182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organo-calcium compounds
Assignee: Bayer AG
•
Filing: 1964-04-29
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Granted: 1966-10-04
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Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Pampus Gottfried
- 👤 Grone Heinz
- 👤 Witte Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:43
CPC Classifications
C; C07; C07F; C07F3/00; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A CALCIUM-CONTAINING CATALYST COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
7 words
A CALCIUM-CONTAINING CATALYST COMPOUND OF THE FORMULA:
References Cited (Backward Citations)
GB821107A
Cited
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 |