US3177218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methylene-bis(2-guanidino-4-methylquinazoline)
Assignee: Monsanto Chemicals Ltd
•
Filing: 1962-01-17
•
Granted: 1965-04-06
•
Expires: 1982-01-17
Abstract
No abstract record available.
Inventors
- 👤 Brown Joseph Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:51
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/14; A23B7/153; A23B7/154
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
6,6'' - METHYLENE - BIS(2-GUANIDINO-4-METHYLQUINAZOLINE). 2. 8,8'' - METHYLENE - BIS(2-GUANIDINO-4-METHYLQUINAZOLINE).
Claim 2
Dependent Claim
11 words
6,6'' - METHYLENE - BIS(2-GUANIDINO-4-METHYLQUINAZOLINE). 2. 8,8'' - METHYLENE - BIS(2-GUANIDINO-4-METHYLQUINAZOLINE).
References Cited (Backward Citations)
US2874182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |