Patent US3338845A successfully refreshed from Google Patents.
US3338845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular plastic compositions
Assignee: Georgia-Pacific LLC
•
Filing: 1964-05-01
•
Granted: 1967-08-29
•
Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Bernard G Alzner
- 👤 Oskar E H Klopfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; C08J9/147; C08J2357/00; C08J2357/06; C08J2357/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
PROCESS FOR THE PREPARATION OF A CELLULAR REACTION PRODUCT, SAID PROCESS COMPRISING HEATING TO REACT AN ORGANIC ISOCYANATE WITH A SECONDARY AMINE HAVING THE FORMULA
Claim 2
Dependent Claim
25 words
PROCESS FOR THE PREPARATION OF A CELLULAR REACTION PRODUCT, SAID PROCESS COMPRISING HEATING TO REACT AN ORGANIC ISOCYANATE WITH A SECONDARY AMINE 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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |