US3549091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid energy milling tio2 pigment
Assignee: NL Chemicals Inc
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Filing: 1968-03-14
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Granted: 1970-12-22
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Expires: 1988-03-14
Abstract
No abstract record available.
Inventors
- 👤 Richard A Slepetys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06; C; C09; C09C; C09C1/00; C09C1/36; C09C1/3692; C09C3/00; C09C3/04; C09C3/041; C09C3/06; C09C3/08; C09C3/10; C01; C01P; C01P2006/00; C01P2006/20
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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |