US2811408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding plastic articles
Assignee: Dow Silicones Corp
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Filing: 1954-11-19
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Granted: 1957-10-29
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Expires: 1974-11-19
Abstract
No abstract record available.
Inventors
- 👤 Orville A Braley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:27
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B29C33/62; B29C33/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A METHOD OF MOLDING PLASTIC ARTICLES WHICH COMPRISE FORMING ORGANIC AND ORGANOSILICON PLASTIC ARTICLES IN A MOLD SELECTED FROM THE GROUP CONSISTING OF WOOD, PLASTIC, CERAMIC AND METAL MOLDS, THE MOLDING SURFACES OF WHICH HAVE BEEN COATED WITH (1) AN ORGANASILICON COMPOSITION COMPRISING A COPOLYMER CONSISTING ESSENTIALLY OF TRIMETHYLSILOXANE UNITS AND SIO2 UNITS IN SUCH PORPORTION THAT THE RATIO OF METHYL RADICALS TO SILICON ATOMS IS FROM 1:1 TO 2.5:1 INCLUSIVE AND THEREAFTER REMOVING THE MOLDED ARTICLE FROM THE MOLD, THE PLASTIC ARTICLE BEING FORMED FROM ANY PLASTIC MATERIAL OTHER THAN (1).
Claim 2
Independent Claim
92 words
A METHOD OF MOLDING PLASTIC ARTICLES WHICH COMPRISE FORMING ORGANIC AND ORGANOSILICON PLASTIC ARTICLES IN A MOLD SELECTED FROM THE GROUP CONSISTING OF WOOD, PLASTIC, CERAMIC AND METAL MOLDS, THE MOLDING SURFACES OF WHICH HAVE BEEN COATED WITH (1) AN ORGANASILICON COMPOSITION COMPRISING A COPOLYMER CONSISTING ESSENTIALLY OF TRIMETHYLSILOXANE UNITS AND SIO2 UNITS IN SUCH PORPORTION THAT THE RATIO OF METHYL RADICALS TO SILICON ATOMS IS FROM 1:1 TO 2.5:1 INCLUSIVE AND THEREAFTER REMOVING THE MOLDED ARTICLE FROM THE MOLD, THE PLASTIC ARTICLE BEING FORMED FROM ANY PLASTIC MATERIAL OTHER THAN (1).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |