Patent US3317575A successfully refreshed from Google Patents.
US3317575A
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Heterocycles having in the ring thereof an element from group v-a
Assignee: Stauffer Chemical Co
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Filing: 1963-11-04
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Granted: 1967-05-02
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Breindel
- 👤 Herbstman Sheldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:49
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/90; C07F9/66; C07F9/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
A HETEROCYCLIC COMPOUND OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
7 words
A HETEROCYCLIC COMPOUND OF THE FOLLOWING FORMULA:
Claim 3
Independent Claim
11 words
THE METHOD OF PREPARING A HETEROCYCLIC COMPOUND OF THE FOLLOWING FORMULA:
Claim 4
Independent Claim
11 words
THE METHOD OF PREPARING A HETEROCYCLIC COMPOUND OF THE FOLLOWING 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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |