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US3100719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifouling pigment
Assignee: NL Industries Inc
•
Filing: 1961-06-30
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Granted: 1963-08-13
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Expires: 1981-06-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward J Dunn
- 👤 Kushner Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:58
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/28; C09C1/30; C09C1/3045; C09C1/3054; C09D; C09D5/00; C09D5/16; C09D5/1606; C09D5/1612; C09D5/1618; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C01P2004/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A COMPOSITE PIGMENT CONSISTING ESSENTIALLY OF A SILICA CORE AND A COATING OF COPPER OXIDE, SAID SILICA ANAYLTICALLY PRESENT WITHIN THE RANGE OF FROM 25% TO 75%.
Claim 2
Dependent Claim
27 words
A COMPOSITE PIGMENT CONSISTING ESSENTIALLY OF A SILICA CORE AND A COATING OF COPPER OXIDE, SAID SILICA ANAYLTICALLY PRESENT WITHIN THE RANGE OF FROM 25% TO 75%.
References Cited (Backward Citations)
US2847475A
Cited
US3004857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |