US3517484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective adsorption process
Assignee: Union Carbide Corp
•
Filing: 1968-03-13
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Granted: 1970-06-30
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Expires: 1988-03-13
Abstract
No abstract record available.
Inventors
- 👤 Max Nai Yuen Lee
- 👤 Richard Joseph Schoofs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:43
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01D; B01D53/00; B01D53/02; B01D53/04; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/108; B01D2253/1085; B01D2256/00; B01D2256/24; B01D2257/00; B01D2257/30; B01D2257/304; B01D2257/306; B01D2257/308; B01D2257/40; B01D2257/404; B01D2257/406; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40086; B01D2259/402
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2992703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |