US2900797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of normally gaseous acidic components and methane
Assignee: Individual
•
Filing: 1956-05-25
•
Granted: 1959-08-25
•
Expires: 1976-05-25
Abstract
No abstract record available.
Inventors
- 👤 Kurata Fred
- 👤 Kohn James Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:47
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/62; B01D53/002; C; C07; C07C; C07C7/00; C07C7/14; F; F25; F25J; F25J3/00; F25J3/06; F25J3/0605; F25J3/061; F25J3/063; F25J3/0635; F25J3/067; F25J2205/00; F25J2205/20; F25J2240/00; F25J2240/40; Y; Y02; Y02C; Y02C20/00; Y02C20/40; Y02P; Y02P20/00; Y02P20/151; Y10; Y10S; Y10S55/00; Y10S55/25; Y10S62/00; Y10S62/928; Y10S62/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR THE SEPARATION OF CARBON DIOXIDE AND METHANE WHICH COMPRISES MAINTAINING A MIXTURE OF METHANE AND CARBON DIOXIDE AT A SUFFICIENTLY HIGH PRESSURE AND A SUFFICIENTLY LOW TEMPERATURE TO COMPLETELY LIQUEFY METHANE IN WHICH ALL THE CARBON DIOXIDE IS DISSOLVED, THEREAFTER REDUCING THE TEMPERATURE ON SAID LIQUID METHANE SUFFICIENTLY LOW SUCH THAT CARBON DIOXIDE PRECIPITATES FROM LIQUID METHANE AS A SOLID, AND SEPARATING SOLID CARBON DIOXIDE FROM METHANE.
Claim 2
Dependent Claim
70 words
A PROCESS FOR THE SEPARATION OF CARBON DIOXIDE AND METHANE WHICH COMPRISES MAINTAINING A MIXTURE OF METHANE AND CARBON DIOXIDE AT A SUFFICIENTLY HIGH PRESSURE AND A SUFFICIENTLY LOW TEMPERATURE TO COMPLETELY LIQUEFY METHANE IN WHICH ALL THE CARBON DIOXIDE IS DISSOLVED, THEREAFTER REDUCING THE TEMPERATURE ON SAID LIQUID METHANE SUFFICIENTLY LOW SUCH THAT CARBON DIOXIDE PRECIPITATES FROM LIQUID METHANE AS A SOLID, AND SEPARATING SOLID CARBON DIOXIDE FROM METHANE.
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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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |