US3184435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes containing a norbornane [norcamphane] nucleus
Assignee: Eastman Kodak Co
•
Filing: 1962-11-13
•
Granted: 1965-05-18
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Jr Winston J Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:06
CPC Classifications
C; C08; C08L; C08L75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A RESINOUS POLYURETHANE SUBSTANTIALLY COMPOSED OF THE FOLLOWILNG REPEATING UNITS:
Claim 2
Dependent Claim
10 words
A RESINOUS POLYURETHANE SUBSTANTIALLY COMPOSED OF THE FOLLOWILNG REPEATING UNITS:
References Cited (Backward Citations)
US2666748A
Cited
US2708617A
Cited
US2800464A
Cited
US2900368A
Cited
US2926145A
Cited
US2952666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |