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US3126404A
Expired / Lapsed
US
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Biguanide adducts of phenyl isocyanate
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:40
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/20; C07C279/24; C07C279/26; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1858
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
AN ADDUCT OF PHENYL ISOYANATE AND A POLYMETHYL SUBSTITUTED BIGUANIDE SELECTED FROM THE CLASS CONSISTING OF TETRAMETHYLBIGUANIDE, PENTAMETHYLIBIGUANIDE AND HEXAMETHYLBIGUANIDE.
Claim 2
Dependent Claim
20 words
AN ADDUCT OF PHENYL ISOYANATE AND A POLYMETHYL SUBSTITUTED BIGUANIDE SELECTED FROM THE CLASS CONSISTING OF TETRAMETHYLBIGUANIDE, PENTAMETHYLIBIGUANIDE AND HEXAMETHYLBIGUANIDE.
References Cited (Backward Citations)
GB716194A
Cited
US2725385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |