US3440292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxymethyl-terminated polymers
Assignee: United States Department of the Army
•
Filing: 1963-12-23
•
Granted: 1969-04-22
•
Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Henry C Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:32
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF: (A) A LIQUID POLYMER OF THE FORMULA
Claim 2
Dependent Claim
15 words
A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF: (A) A LIQUID POLYMER OF 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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |