Patent US3522725A successfully refreshed from Google Patents.
US3522725A
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US
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Liquid chromatograph
Assignee: Waters Associates Inc
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Filing: 1969-01-08
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Granted: 1970-08-04
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Expires: 1989-01-08
Abstract
No abstract record available.
Inventors
- 👤 James L Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:51
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/41; G01N21/4133; G01N30/00; G01N30/02; G01N30/26; G01N30/28; G01N30/30; G01N2030/3084; G01N33/00; G01N33/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3139745A
Cited
US3232093A
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US3285055A
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US3403545A
Cited
US3290482A
Cited
US3407647A
Cited
US3440397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |