Patent US3922241A successfully refreshed from Google Patents.
US3922241A
Expired / Lapsed
US
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Asbestos-free heat-resistant thermosettable phenol-aldehyde molding composition
Assignee: Plastics Engineering Co
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Filing: 1974-06-12
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Granted: 1975-11-25
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Expires: 1994-06-12
Abstract
Abstract An asbestos free, heat resistant phenolic molding composition comprising in admixture, a phenolic resin and a filler combination of aluminum silicate, talc and cellulose fibers.
Inventors
- 👤 Richard H Barker
- 👤 Frank P Florentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:41
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08L; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
50 words
AN ASBESTOS-FREE, HEAT-RESISTANT THERMOSETTABLE PHENOLALDEHYDE MOLDING COMPOSITION CONSISTING ESSENTIALLY OF IN ADMIXTURE, A PHENOL-ALDEHYDE RESIN AND A FILLER COMBINATION OF ALUMINUM SILICATE, TALC AND CELLULOSE FIBERS; SAID FILLER COMBINATION PRESENT IN AN AMOUNT OF FROM ABOUT 15 TO ABOUT 50 WEIGHT PERCENT BASED ON THE WEIGHT OF THE MOLDING COMPOSITION.
Claim 2
Dependent Claim
50 words
AN ASBESTOS-FREE, HEAT-RESISTANT THERMOSETTABLE PHENOLALDEHYDE MOLDING COMPOSITION CONSISTING ESSENTIALLY OF IN ADMIXTURE, A PHENOL-ALDEHYDE RESIN AND A FILLER COMBINATION OF ALUMINUM SILICATE, TALC AND CELLULOSE FIBERS; SAID FILLER COMBINATION PRESENT IN AN AMOUNT OF FROM ABOUT 15 TO ABOUT 50 WEIGHT PERCENT BASED ON THE WEIGHT OF THE MOLDING COMPOSITION.
Claim 3
Dependent Claim
33 words
The composition as defined in claim 2 wherein the aluminum silicate is present in an amount of from about 5 to about 20 weight percent based on the weight of the molding composition.
Claim 4
Dependent Claim
32 words
The composition as defined in claim 1 wherein the talc is present in an amount of from about 5 to about 20 weight percent based on the weight of the molding composition.
Claim 5
Dependent Claim
33 words
The composition as defined in claim 1 wherein the cellulose fibers are present in an amount of from about 5 to about 10 weight percent based on the weight of the molding composition.
Claim 6
Dependent Claim
10 words
The composition as defined in claim 1 which contains lime.
Claim 7
Dependent Claim
10 words
The composition as defined in claim 1 which contains coal.
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) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |