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US3489518A
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Carbon determination method and apparatus
Assignee: Raymond Kaiser Engineers Inc
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Filing: 1966-11-02
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Granted: 1970-01-13
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Expires: 1986-11-02
Abstract
No abstract record available.
Inventors
- 👤 Frank Revell
- 👤 Franklin E Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:07
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; G; G01; G01N; G01N33/00; G01N33/20; G01N33/202; G01N33/2022; G01N33/2025; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/204998; Y10T436/207497; Y10T436/208339; Y10T436/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3181343A
Cited
US3329495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |