US3542575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Titanium dioxide for use in coating compositions
Assignee: NL Chemicals Inc
•
Filing: 1967-12-15
•
Granted: 1970-11-24
•
Expires: 1987-12-15
Abstract
No abstract record available.
Inventors
- 👤 John E Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:44
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3676; C09D; C09D135/00; C09D135/02; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C01P2004/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB717838A
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US2744029A
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US2737460A
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US2913437A
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US3076719A
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US3236797A
Cited
US3224993A
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US3205085A
Cited
GB1025960A
Cited
US3200000A
Cited
US3436239A
Cited
US3345187A
Cited
US3425855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |