Patent US2867887A successfully refreshed from Google Patents.
Patent US3393969A successfully refreshed from Google Patents.
US3393969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous cellulosic diazonium salts and method of preparation
Assignee: United States Department of Agriculture
•
Filing: 1964-08-26
•
Granted: 1968-07-23
•
Expires: 1984-08-26
Abstract
No abstract record available.
Inventors
- 👤 Ricardo H Wade
- 👤 Tyrone L Vigo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:52
CPC Classifications
C; C08; C08B; C08B13/00; C08B15/00; C08B15/05; C08B15/06; D; D06; D06P; D06P1/00; D06P1/02; D06P1/12; D06P1/122; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A DRY CHEMICALLY-REACTIVE CELLULOSE DIAZONIUM SALT (DIAZO-CELLULOSE), STABLE AT TEMPERATURES UP TO ABOUT 185*F., AND HAVING THE FORMULA
Claim 2
Dependent Claim
18 words
A DRY CHEMICALLY-REACTIVE CELLULOSE DIAZONIUM SALT (DIAZO-CELLULOSE), STABLE AT TEMPERATURES UP TO ABOUT 185*F., AND HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |