US2856635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing plastic sheet material with pearl essence incorporated therein
Assignee: Patrician Plastic Corp
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Filing: 1954-08-24
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Granted: 1958-10-21
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Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Gerson Edward
- 👤 Paul F Bruins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:19
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/04; Y; Y10; Y10S; Y10S264/00; Y10S264/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
84 words
A METHOD OF MAKING PEARLY PLASTIC SHEET MATERIAL, COMPRISING CENTRIFUGALLY CASTING A PLASTIC MIX CONSISTING ESSENTIALLY OF A POLYMERIC UNSATURATED POLYESTER RESIN, AND PEARL ESSENCE AND CONTAINING A CATALYST AND A CATALYST PROMOTER, SAID RESIN BEING POLYMERIZABLE FIRST TO A FLACCID CONDITION AND THEREAFTER TO A RIGID CONDITION, AND THEREBY FORMING A TUBE OF SAID MATERIAL WITH THE PEARL ESSENCE ORIENTED THEREIN FOR OPTIMUM NACREOUS APPEARANCE, TERMINATING THE CENTRIFUGAL CASTING OPERATION WHILE THE TUBE IS IN A FLACCID CONDITION AND BEFORE THE CHEMICAL CROSS-
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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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |