US3462364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for optimizing chemical treatment
Assignee: Individual
•
Filing: 1966-01-17
•
Granted: 1969-08-19
•
Expires: 1986-01-17
Abstract
No abstract record available.
Inventors
- 👤 Herbert Gustaf Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:28
CPC Classifications
G; G05; G05D; G05D21/00; G05D21/02; Y; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/921; Y10T; Y10T436/00; Y10T436/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2627453A
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US2668097A
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US2715610A
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US3073682A
Cited
US2989377A
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US3192017A
Cited
US3238128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |