US3531252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of analyzing conductive solutions
Assignee: Calgon Corp
•
Filing: 1966-10-17
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Granted: 1970-09-29
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Hubert M Rivers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:18
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/021; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/034; Y10T137/2496; Y10T137/2499; Y10T137/2509; Y10T436/00; Y10T436/15; Y10T436/20; Y10T436/203332
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2559090A
Cited
US2964024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |