US3510513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of a purified benzophenone carboxylic acid
Assignee: IMI-TECH Corp 701 FARGO ELK GROVE VILLAGE ILL 60007 A DE CORP
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Filing: 1966-03-23
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Granted: 1970-05-05
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Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 John H Mccracken
- 👤 Johann G D Schulz
- 👤 John V Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:37
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/27; C07C51/275; C07C51/42; C07C51/487
Claims Analysis
Total Claims: 0
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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) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |