US3663486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic resin compositions and a method for the preparation thereof
Assignee: Union Carbide Corp
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Filing: 1969-11-10
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Granted: 1972-05-16
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Expires: 1989-11-10
Abstract
Abstract THIS INVENTION RELATES TO PHENOLIC RESIN COMPOSITIONS, SUITABLE FOR USE IN MOLDING APPLICATIONS AND TO A METHOD FOR THE PREPARATION THEREOF BY ADDING A GROUP II METAL HYDROXIDE OR OXIDE TO A LIQUID PHENOLIC NOVOLAC RESIN TO FORM A SOLUTION AND THEREAFTER ADDING TO THIS SOLUTION, WITH AGITATION, A MONOBASIC ACID AND IF DESIRED A FILLER SUCH AS SAND WITH THE RESULT THAT THE SANE IS COATED BY THE PHENOLIC RESIN AND A GROUP II METAL SALT IS PRECIPITATED AND DISPERSED THROUGHOUT THE RESULTANT FREE-FLOWING COMPOSITION.
Inventors
- 👤 William A Keutgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:30
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/2246; B22C1/2253; C; C08; C08K; C08K9/00; C08K9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |