US2973333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane polymer
Assignee: EIDP Inc
•
Filing: 1954-09-01
•
Granted: 1961-02-28
•
Expires: 1974-09-01
Abstract
No abstract record available.
Inventors
- 👤 Katz Manfred
- 👤 Emerson L Wittbecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:52
CPC Classifications
C; C08; C08L; C08L75/00; Y; Y10; Y10S; Y10S264/00; Y10S264/77
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A POLYURETHANE WITH A POLYMER MELT TEMPERATURE OF AT LEAST ABOUT 200*F. CONTAINING RECURRING UNITS OF THE FORMULA
Claim 2
Dependent Claim
18 words
A POLYURETHANE WITH A POLYMER MELT TEMPERATURE OF AT LEAST ABOUT 200*F. CONTAINING RECURRING UNITS OF THE FORMULA
References Cited (Backward Citations)
US2658886A
Cited
US2800464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |