US3490896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving mixing efficiency
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1966-09-07
•
Granted: 1970-01-20
•
Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Theodore D Steinke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:55
CPC Classifications
B; B26; B26D; B26D5/00; B26D5/08; B26D5/10; B01; B01F; B01F25/00; B01F25/50; C; C22; C22B; C22B9/00; C22B9/02; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US671075A
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US1157092A
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US2021092A
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US2470267A
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US2465544A
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US3278295A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |