US3073093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for purifying gases
Assignee: Union Carbide Corp
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Filing: 1959-11-12
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Granted: 1963-01-15
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Expires: 1979-11-12
Abstract
No abstract record available.
Inventors
- 👤 Charles R Baker
- 👤 Richard S Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:34
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/506; F; F25; F25J; F25J3/00; F25J3/02; F25J3/0204; F25J3/0223; F25J3/0228; F25J3/0252; F25J3/028; F25J3/029; F25J3/08; C01B2203/00; C01B2203/04; C01B2203/0465; C01B2203/047; C01B2203/048; F25J2205/00; F25J2205/30; F25J2205/50; F25J2210/00; F25J2210/12; F25J2215/00; F25J2215/10; F25J2215/30; F25J2215/32; F25J2270/00; F25J2270/12; F25J2270/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR THE LOW-TEMPERATURE SEPARATION OF LOWER BOILING IMPURITIES SUCH AS AT LEAST ONE OF NITROGEN AND CARBON MONOXIDE FROM A CRUDE FEED GAS HAVING A MAIN CONSTITUENT BOILING BELOW ABOUT -245*C. INCLUDING THE
Claim 2
Dependent Claim
35 words
A PROCESS FOR THE LOW-TEMPERATURE SEPARATION OF LOWER BOILING IMPURITIES SUCH AS AT LEAST ONE OF NITROGEN AND CARBON MONOXIDE FROM A CRUDE FEED GAS HAVING A MAIN CONSTITUENT BOILING BELOW ABOUT -245*C. INCLUDING THE
References Cited (Backward Citations)
US2250949A
Cited
US2857018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |