US3097073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen chloride production system
Assignee: Occidental Chemical Corp
•
Filing: 1957-11-29
•
Granted: 1963-07-09
•
Expires: 1977-11-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Hildyard
- 👤 Haldred C Breckon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:02
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B7/012
Claims Analysis
Total Claims: 0
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US2823740A
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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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |