Patent US2977637A successfully refreshed from Google Patents.
US2977637A
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Method of molding articles
Assignee: Conso Realty Co
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Filing: 1955-04-28
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Granted: 1961-04-04
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Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Henry C Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:06
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/002; B29C51/14; B29K; B29K2101/00; B29K2101/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
A METHOD OF MOLDING PLASTIC MATERIALS COMPRISING RETAINING A CONTINUOUS LAYER OF UNSET PLASTIC MATERIAL HAVING IMBEDDED THEREIN A MAT OF REINFORCING MATERIAL BETWEEN THIN FILMS OF SET PLASTIC MATERIAL, SAID UNSET PLASTIC MATERIAL CONTAINING AN AGENT WHICH ACTS TO TEMPORARILY PLASTICIZE SAID FILMS ON CONTACT THEREWITH, MANIPULATING SAID PLASTICIZED FILMS AND UNSET PLASTIC LAYER THEREBETWEEN BY DRAWING TO A DESIRED FORM FOR SAID UNSET PLASTIC LAYER, SETTING SAID PLASTIC LAYER IN SAID DESIRED FORM, APPLYING A FILM-PLASTICIZING LIQUID TO SAID FILMS EXTERIOR OF SAID SET PLASTIC LAYER, STRIPPING SAID PLASTICIZED FILMS FROM SAID SET PLASTIC LAYER, SAID LIQUID ALSO ACTING ON THE SURFACE OF SAID SET PLASTIC LAYER TO GIVE A SMOOTH GLAZED FINISH THERETO WHEN SET, WHEREBY THE MOLD FILMS ARE REMOVED AND THE SAID SURFACES ARE GLAZED IN ONE OPERATION.
References Cited (Backward Citations)
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |