Patent US3270036A successfully refreshed from Google Patents.
US3270036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adamantylbiguanides
Assignee: ER Squibb and Sons LLC
•
Filing: 1965-10-07
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Granted: 1966-08-30
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Expires: 1985-10-07
Abstract
No abstract record available.
Inventors
- 👤 Bernstein Jack
- 👤 Pribyl Edward Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:16
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/20; C07C279/24; C07C279/26; C07D; C07D401/00; C07D401/02; C07D401/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A COMPOUND OF THE FORMULA FI-01 WHEREIN R AND R1 EACH IS HYDROGEN, HALOGEN, LOWER ALKYL, PHENYL OR LOWER ALKOXY, R2, R3 AND R4 EACH IS HYDROGEN, LOWER ALKYL OR PHENYLLOWER AND ALKYL, AND N IS 0 OR 1, AND ACID-ADDITION SALTS THEREOF.
Claim 2
Dependent Claim
43 words
A COMPOUND OF THE FORMULA FI-01 WHEREIN R AND R1 EACH IS HYDROGEN, HALOGEN, LOWER ALKYL, PHENYL OR LOWER ALKOXY, R2, R3 AND R4 EACH IS HYDROGEN, LOWER ALKYL OR PHENYLLOWER AND ALKYL, AND N IS 0 OR 1, AND ACID-ADDITION SALTS THEREOF.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |