US3103408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ming c
Assignee: —
•
Filing: —
•
Granted: 1963-09-10
•
Expires: 1980-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:00
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J2375/00; C08J2375/04; Y; Y10; Y10S; Y10S264/00; Y10S264/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE METHOD OF MAKING A PERMANENTLY COMPRRSSED POLYURETHANE PRODUCT, COMPRISING: COMPRESSING WITH A COMPRESSIVE FORCE A FOAMED CELLULAR POLYETHER POLYURETHANE PLASTIC PRODUCED BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH AN ORGANIC POLYETHER COMPOUND HAVING AN ACTIVE HYDROGEN GROUP THAT IS REACTIVE WITH AN -NCO GROUP, SAID COMPRESSING SERVING TO REDUCE SAID FOAMED PLASTIC TO A THICKNESS LESS THAN THAT OF SAID PLASTIC IN THE UNCOMPRESSED STATE; SIMULTANEOUSLY SUBJECTING THE COMPRESSED PLASTIC TO AN ACID FOR A TIME SUFFICIENT TO CAUSE THE PLASTIC TO RETAIN AT LEAST PART OF ITS COMPRESSED CONDITION; AND THE THEREUPON REMOVING FIRST EXCESS ACID AND THEN SAID COMPRESSIVE FORCE FROM THE THUSLY TREATED PLASTIC.
Claim 2
Independent Claim
111 words
THE METHOD OF MAKING A PERMANENTLY COMPRRSSED POLYURETHANE PRODUCT, COMPRISING: COMPRESSING WITH A COMPRESSIVE FORCE A FOAMED CELLULAR POLYETHER POLYURETHANE PLASTIC PRODUCED BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH AN ORGANIC POLYETHER COMPOUND HAVING AN ACTIVE HYDROGEN GROUP THAT IS REACTIVE WITH AN -NCO GROUP, SAID COMPRESSING SERVING TO REDUCE SAID FOAMED PLASTIC TO A THICKNESS LESS THAN THAT OF SAID PLASTIC IN THE UNCOMPRESSED STATE; SIMULTANEOUSLY SUBJECTING THE COMPRESSED PLASTIC TO AN ACID FOR A TIME SUFFICIENT TO CAUSE THE PLASTIC TO RETAIN AT LEAST PART OF ITS COMPRESSED CONDITION; AND THE THEREUPON REMOVING FIRST EXCESS ACID AND THEN SAID COMPRESSIVE FORCE FROM THE THUSLY TREATED PLASTIC.
References Cited (Backward Citations)
US2384387A
Cited
FR1176044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |