US3537820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for analyzing a chemical composition
Assignee: Babcock and Wilcox Co
•
Filing: 1966-09-14
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Granted: 1970-11-03
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Expires: 1986-09-14
Abstract
No abstract record available.
Inventors
- 👤 Henry P Markant
- 👤 Indravadan S Shah
- 👤 Norbert Soltys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:41
CPC Classifications
D; D21; D21G; D21G9/00; D21G9/0009; D21G9/0018; D21C; D21C11/00; D21C11/06; D21C11/063; H; H03; H03F; H03F3/00; H03F3/04; H03F3/14; Y; Y10; Y10T; Y10T436/00; Y10T436/18; Y10T436/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2627453A
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US2927871A
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US3074277A
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US3096157A
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US3230048A
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US3293320A
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US3399037A
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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) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |