US3540849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analysis of aldehydes,unsaturated hydrocarbons and ketones
Assignee: Beckman Coulter Inc
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Filing: 1968-06-17
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Granted: 1970-11-17
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Expires: 1988-06-17
Abstract
No abstract record available.
Inventors
- 👤 Radhakrishna M Neti
- 👤 Tom J Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:53
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/631; G01N33/00; G01N33/0004; G01N33/0009; G01N33/0011; G01N33/0013; Y; Y10; Y10S; Y10S436/00; Y10S436/905; Y10T; Y10T436/00; Y10T436/20; Y10T436/200833; Y10T436/201666; Y10T436/21; Y10T436/214; Y10T436/216; Y10T436/25; Y10T436/25125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |