US3036998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric hydrazinium salts
Assignee: WR Grace and Co
•
Filing: 1959-05-25
•
Granted: 1962-05-29
•
Expires: 1979-05-25
Abstract
No abstract record available.
Inventors
- 👤 Rudner Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:36
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/08; C08G18/0804; C08G18/0809
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
POLYMERIC COMPOSITION CONSISTING ESSENTIALLY OF A MULTIPLICIITY OF THE UNIT:
Claim 2
Dependent Claim
10 words
POLYMERIC COMPOSITION CONSISTING ESSENTIALLY OF A MULTIPLICIITY OF THE UNIT:
References Cited (Backward Citations)
US2889366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |