Patent US3454929A successfully refreshed from Google Patents.
US2777824A
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Process for making micro-reticulated material
Assignee: Perma-Stamp Products Corp
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Filing: 1950-06-27
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Granted: 1957-01-15
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Expires: 1970-06-27
Abstract
No abstract record available.
Inventors
- 👤 Harry R Leeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:18
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; C08J2201/00; C08J2201/04; C08J2201/05; C08J2201/0502; Y; Y10; Y10S; Y10S264/00; Y10S264/61; Y10S424/00; Y10S424/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR THE PRODUCTION OF PLASTIC RESIN HAVING A MICROPOROUS MICRORETICULATED STRUCTURE WHICH COMPRISES HEATING A MIXTURE COMPRISING A THERMOPLASTIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE, POLYVINYL ACETATE, POLYETHYLENE AND POLYVINYL BUTYRAL, A PLASTICIZER FOR THE RESIN AND AN ORGANIC LIQUID WHICH IS A NONSOLVENT FOR THE RESIN, TO A TEMPERATURE AT WHICH SAID RESIN FUSES UNDER A PRESSURE SUFFICIENT TO MAINTAIN SAID LIQUID IN THE LIQUID PHASE UNTIL A MICRORETICULATED STRUCTURE IS FORMED.
Claim 2
Dependent Claim
78 words
A PROCESS FOR THE PRODUCTION OF PLASTIC RESIN HAVING A MICROPOROUS MICRORETICULATED STRUCTURE WHICH COMPRISES HEATING A MIXTURE COMPRISING A THERMOPLASTIC RESIN SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE, POLYVINYL ACETATE, POLYETHYLENE AND POLYVINYL BUTYRAL, A PLASTICIZER FOR THE RESIN AND AN ORGANIC LIQUID WHICH IS A NONSOLVENT FOR THE RESIN, TO A TEMPERATURE AT WHICH SAID RESIN FUSES UNDER A PRESSURE SUFFICIENT TO MAINTAIN SAID LIQUID IN THE LIQUID PHASE UNTIL A MICRORETICULATED STRUCTURE IS FORMED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |