US3429680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam reforming of hydrocarbons
Assignee: JGC Corp
•
Filing: 1964-10-15
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Granted: 1969-02-25
•
Expires: 1984-10-15
Abstract
No abstract record available.
Inventors
- 👤 Isaburo Watanabe
- 👤 Haruo Yoshioka
- 👤 Seiji Sanga
- 👤 Shohachi Egashira
- 👤 Taketo Ohki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:52
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; C10; C10G; C10G11/00; C10G11/02; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; C01B2203/1076; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |