US3215650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of foamed resins
Assignee: Peltex SA
•
Filing: 1962-05-16
•
Granted: 1965-11-02
•
Expires: 1982-05-16
Abstract
No abstract record available.
Inventors
- 👤 Julius Anatole
- 👤 Peters Rene
- 👤 Lichtenberg Francois De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:20
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08L; C08L67/00; C08L67/06; Y; Y10; Y10S; Y10S264/00; Y10S264/02; Y10S264/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS FOR THE PRODUCTION OF CELLULAR MASSES OF POLYMER RESIN BY EVOLUTION OF GAS WITHIN THE MASS BEFORE AND DURING POLYMERIZATION, WHICH POLYMER RESIN IS CHARACTERIZED BY EVOLUTION OF HEAT DURING THE POLYMERIZATION, WHICH COMPRISES PREPARING AN ANHYDROUS LIQUID MIXTURE OF THE RESIN TO BE POLYMERIZED WITH A SALT HAVING A GASEOUS ANHYDRIDE AND AN ANHYDRIDE OF AN ACID CAPABLE OF REPLACING THE ANHYDRIDE OF THE SALT, AND ADDING TO THE MIXTURE A DISPERSION OF A THERMOPLASTIC RESIN IN WATER WHICH THERMOPLASTIC RESIN IS DIFFERENT FROM SAID POLYMER RESIN.
Claim 2
Dependent Claim
90 words
A PROCESS FOR THE PRODUCTION OF CELLULAR MASSES OF POLYMER RESIN BY EVOLUTION OF GAS WITHIN THE MASS BEFORE AND DURING POLYMERIZATION, WHICH POLYMER RESIN IS CHARACTERIZED BY EVOLUTION OF HEAT DURING THE POLYMERIZATION, WHICH COMPRISES PREPARING AN ANHYDROUS LIQUID MIXTURE OF THE RESIN TO BE POLYMERIZED WITH A SALT HAVING A GASEOUS ANHYDRIDE AND AN ANHYDRIDE OF AN ACID CAPABLE OF REPLACING THE ANHYDRIDE OF THE SALT, AND ADDING TO THE MIXTURE A DISPERSION OF A THERMOPLASTIC RESIN IN WATER WHICH THERMOPLASTIC RESIN IS DIFFERENT FROM SAID POLYMER RESIN.
References Cited (Backward Citations)
US2461761A
Cited
US2576073A
Cited
US2491409A
Cited
GB652770A
Cited
US2514141A
Cited
US2529512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |