Patent US2882178A successfully refreshed from Google Patents.
US2882178A
Expired / Lapsed
US
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Composite antimony oxide-silica pigment and process of manufacture
Assignee: NL Industries Inc
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Filing: 1958-01-16
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Granted: 1959-04-14
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Expires: 1978-01-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward J Dunn
- 👤 Kushmer Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:13
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/28; C09C1/30; C09C1/3045; C09C1/3054; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A COMPOSITE ANTIMONY OXIDE-SILICA PIGMENT CONSISTING ESSENTIALLY OF AT LEAST ONE OXIDE OF ANTIMONY IN COMBINATION WITH SAID SILICA, SAID ANTIMONY OXIDE SUBSTANTIALLY COATING SAID SILICA.
Claim 2
Dependent Claim
26 words
A COMPOSITE ANTIMONY OXIDE-SILICA PIGMENT CONSISTING ESSENTIALLY OF AT LEAST ONE OXIDE OF ANTIMONY IN COMBINATION WITH SAID SILICA, SAID ANTIMONY OXIDE SUBSTANTIALLY COATING SAID SILICA.
References Cited (Backward Citations)
US2347496A
Cited
US2680105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |