Patent US3536264A successfully refreshed from Google Patents.
US3536264A
Expired / Lapsed
US
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Removal of titanium impurities from clay
Assignee: Thiele Kaolin Co
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Filing: 1968-06-11
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Granted: 1970-10-27
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Expires: 1988-06-11
Abstract
No abstract record available.
Inventors
- 👤 Bernard L Helton Jr
- 👤 Robert E Davis Jr
- 👤 Robert F Billue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:45
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/04; C04B33/06; C04B33/30; C09; C09C; C09C1/00; C09C1/40; C09C1/42; D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/40; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2987473A
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US3097801A
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US3171718A
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US3432030A
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US3439801A
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US3446348A
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US3343973A
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US3371988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |