US3236802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kaolin clay coated with neutralized monomeric aminoalkyl ester of methacrylic acid and polyester resins containing the same
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1961-12-18
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Granted: 1966-02-22
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Ferrigno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:35
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
NATURALLY OCCURRING KAOLIN CLAY, THE PARTICLES OF WHICH ARE UNIFORMLY COATED WITH ABOUT 1/4% TO ABOUT 5% BY WEIGHT OF AN N-ALKYLAMINOALKYL METHACRYLATE MONOMER WHICH HAS BEEN NEUTRALIZED WITH AN ACID TO THE EQUIVALENCE POINT, SAID MONOMER HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
42 words
NATURALLY OCCURRING KAOLIN CLAY, THE PARTICLES OF WHICH ARE UNIFORMLY COATED WITH ABOUT 1/4% TO ABOUT 5% BY WEIGHT OF AN N-ALKYLAMINOALKYL METHACRYLATE MONOMER WHICH HAS BEEN NEUTRALIZED WITH AN ACID TO THE EQUIVALENCE POINT, SAID MONOMER HAVING THE FOLLOWING STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2999080A
Cited
US3032431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |