Patent US2525177A successfully refreshed from Google Patents.
US2525177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl resin compositions and molds produced therefrom
Assignee: Calresin Corp
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Filing: 1946-10-18
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Granted: 1950-10-10
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Expires: 1966-10-18
Abstract
No abstract record available.
Inventors
- 👤 William C Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:47
CPC Classifications
B; B29; B29C; B29C39/00; C; C08; C08K; C08K5/00; C08K5/02; C08K5/03; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L91/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A RESINOUS COMPOSITION HAVING, WHEN CAST AND CONGEALED, FLEXIBILITY AND RUBBER-LIKE PROPERTIES SUITABLE FOR FORMING MOLDS FOR CASTING OF THERMOSETTING RESIN, WHICH INCLUDES A VINYL RESIN TAKEN FROM THE CLASS CONSISTING OF POLYVINYL CHLORIDE AND POLYVINYL CHLORIDE ACETATE RESINS, WHICH POLYVINYL ACETATE RESINS CONTAIN IN EXCESS OF 88% VINYL CHLORIDE, A RESINOUS CHLORINATED TERPHENYL HYDROCARBON COMPOUND, WHICH COMPOUND IS SOLID AT ROOM TEMPERATURE, AND, IN ADDITION, PLASTICIZERS FOR SAID VINYL RESIN, AND AN OIL SUBSTANTIALLY NON-POLYMERIZABLE AND SUBSTANTIALLY NON-VOLATILE WHEN EXPOSED TO TEMPERATURES UP TO SUBSTANTIALLY 400*F., THE RESIN AND PLASTICIZER BEING SO PROPORTIONED THAT SAID COMPOSITION IS FREE-FLOWING AND SUBSTANTIALLY UNDECOMPOSED WHEN HEATED TO A TEMPERATURE OF SUBSTANTIALLY 380 TO 400*F. AND OF SUFFICIENT RIGIDITY TO MAINTAIN ITS MOLD SHAPE AT TEMPERATURES OF ABOUT 150-200*F.
Claim 2
Dependent Claim
126 words
A RESINOUS COMPOSITION HAVING, WHEN CAST AND CONGEALED, FLEXIBILITY AND RUBBER-LIKE PROPERTIES SUITABLE FOR FORMING MOLDS FOR CASTING OF THERMOSETTING RESIN, WHICH INCLUDES A VINYL RESIN TAKEN FROM THE CLASS CONSISTING OF POLYVINYL CHLORIDE AND POLYVINYL CHLORIDE ACETATE RESINS, WHICH POLYVINYL ACETATE RESINS CONTAIN IN EXCESS OF 88% VINYL CHLORIDE, A RESINOUS CHLORINATED TERPHENYL HYDROCARBON COMPOUND, WHICH COMPOUND IS SOLID AT ROOM TEMPERATURE, AND, IN ADDITION, PLASTICIZERS FOR SAID VINYL RESIN, AND AN OIL SUBSTANTIALLY NON-POLYMERIZABLE AND SUBSTANTIALLY NON-VOLATILE WHEN EXPOSED TO TEMPERATURES UP TO SUBSTANTIALLY 400*F., THE RESIN AND PLASTICIZER BEING SO PROPORTIONED THAT SAID COMPOSITION IS FREE-FLOWING AND SUBSTANTIALLY UNDECOMPOSED WHEN HEATED TO A TEMPERATURE OF SUBSTANTIALLY 380 TO 400*F. AND OF SUFFICIENT RIGIDITY TO MAINTAIN ITS MOLD SHAPE AT TEMPERATURES OF ABOUT 150-200*F.
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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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |