Patent US3716609A successfully refreshed from Google Patents.
US3716609A
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US
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Process for preparing molded structure from polyphenylene sulfide resin and filler
Assignee: RTX Corp
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Filing: 1970-10-05
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Granted: 1973-02-13
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Expires: 1990-10-05
Abstract
Abstract THE MELTING TEMPERATURE OF THE RESIN; THE MOLDING PRESSURE OF ABOUT 3000 P.S.I. IS APPLIED TO THE MOLD BEFORE THE RESIN HAS TIME TO ENCAPSULATE THE FILLER; AFTER COOLING THE MOLD WHILE MAINTAINING THE PRESSURE, THE MOLDED STRUCTURE IS REMOVED FROM THE MOLD. A NOVEL MOLDED STRUCTURE OF POLYPHENYLENE SULFIDE RESIN AND A FILLER IS PRODUCED ACCORDING TO A PROCESS WHEREIN THE RESIN/FILLER MIXTURE IS PRECURED BY HEATING THE MIXTURE TO A TEMPERATURE BELOW THE MELTING TEMPERATURE OF THE RESIN PRIOR TO MOLDING; THE MOLD IS PREHEATED TO A TEMPERATURE OF ABOUT 600 TO 700*F, AND THE CHARGE OF RESIN/FILLER MIXTURE IS PREHEATED TO A TEMPERATURE BELOW
Inventors
- 👤 R Nickols
- 👤 R Emanuelson
- 👤 J Trocciola
- 👤 W Luoma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:42
CPC Classifications
C; C08; C08J; C08J5/00; B; B29; B29C; B29C43/00; B29C43/003; B29C43/006; B29C70/00; B29C70/88; B29C70/882; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/08; B29K; B29K2081/00; B29K2105/00; B29K2105/25; B29K2105/251; B29K2705/00; B29K2707/00; B29K2707/04; B29K2995/00; B29K2995/0003; B29K2995/0005; B29K2995/0012; B29K2995/0013; C08J2381/00; C08J2381/02
Claims Analysis
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |