Patent US3423223A successfully refreshed from Google Patents.
US3423223A
Expired / Lapsed
US
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Method of keeping color deviations within tolerance limits
Assignee: BASF SE
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Filing: 1965-06-11
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Granted: 1969-01-21
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Expires: 1985-06-11
Abstract
No abstract record available.
Inventors
- 👤 Werner Schultze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:51
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J2003/466; G01J3/463; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1540098A
Cited
US1966987A
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US2165167A
Cited
US2262573A
Cited
US2656099A
Cited
US2979066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |