Patent US3262943A successfully refreshed from Google Patents.
US3262943A
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Process for preparing benzotriazole compounds and certain products thereof
Assignee: EIDP Inc
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Filing: 1963-11-07
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Granted: 1966-07-26
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Expires: 1983-11-07
Abstract
No abstract record available.
Inventors
- 👤 James C Kauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:02
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/496; A61Q; A61Q17/00; A61Q17/04; C; C07; C07D; C07D249/00; C07D249/02; C07D249/04; C07D249/06; C07D249/16; C07D249/18; C07D249/20; C07D487/00; C07D487/02; C07D487/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
31 words
PROCESS FOR THE RING CLOSURE OF (O-NITROPHENYL)SUBSTITUTED COMPOUNDS WHICH COMPRISES (I) CONTACTING AND REACTING AT A TEMPERATURE IN THE RANGE OF 0* C. TO 250* C., A COMPOUNF OF THE FORMULA
Claim 2
Dependent Claim
31 words
PROCESS FOR THE RING CLOSURE OF (O-NITROPHENYL)SUBSTITUTED COMPOUNDS WHICH COMPRISES (I) CONTACTING AND REACTING AT A TEMPERATURE IN THE RANGE OF 0* C. TO 250* C., A COMPOUNF OF THE FORMULA
Claim 3
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 4
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |