US3245965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyphthalocyanines
Assignee: Monsanto Co
•
Filing: 1957-11-13
•
Granted: 1966-04-12
•
Expires: 1977-11-13
Abstract
No abstract record available.
Inventors
- 👤 William B Tuemmler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:33
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/045; C08; C08G; C08G73/00; C08G73/06; H; H10; H10K; H10K85/00; H10K85/30; H10K85/311
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
THE COMPOSITIONS OF MATTER COMPRISING POLYPHTHALOCYANINES OF THE CLASS REPRESENTED BY THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
14 words
THE COMPOSITIONS OF MATTER COMPRISING POLYPHTHALOCYANINES OF THE CLASS REPRESENTED BY THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US2213726A
Cited
US2197459A
Cited
US2492732A
Cited
US2513098A
Cited
GB698049A
Cited
US2805957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |