Patent US3208200A successfully refreshed from Google Patents.
US3208200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature adsorption process for purifying low molecular weight gases
Assignee: ConocoPhillips Co
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Filing: 1961-05-18
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Granted: 1965-09-28
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Preston L Gant
- 👤 Yang Kang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:12
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; C; C01; C01B; C01B4/00; C07; C07C; C07C7/00; C07C7/12; C07C7/13; F; F25; F25J; F25J3/00; F25J3/08; B01D2253/00; B01D2253/10; B01D2253/106; B01D2253/30; B01D2253/302; B01D2253/304; B01D2257/00; B01D2257/70; B01D2257/702; B01D2257/7022; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40088; B01D53/0407; B01D53/0423; F25J2205/00; F25J2205/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD OF PURIFYING TRITIUM GAS BY REMOVING TRITIATED METHANE PRESENT AS AN IMPURITY WHICH COMPRISES PACKING A SPRIAL, PYREX TUBULAR COLUMN 46 CENTIMETERS LONG AND 0.6 CENTIMETER INSIDE DIAMETER WITH TEN GRAMS OF A MOLECULAR SIEVE MATERIAL HAVING A PORE SIZE OF ABOUT 3 ANGSTROM UNITES; DEGASSING THE COLUMN AND SIEVE MATERIAL; IMMERSING THE COLUMN IN LIQUID METHANE; AND PASSING THE IMPURE TRITIUM THROUGH SAID COLUMN TO PREFERENTIALLY ABSORB TRITIATED METHANE.
Claim 2
Independent Claim
72 words
A METHOD OF PURIFYING TRITIUM GAS BY REMOVING TRITIATED METHANE PRESENT AS AN IMPURITY WHICH COMPRISES PACKING A SPRIAL, PYREX TUBULAR COLUMN 46 CENTIMETERS LONG AND 0.6 CENTIMETER INSIDE DIAMETER WITH TEN GRAMS OF A MOLECULAR SIEVE MATERIAL HAVING A PORE SIZE OF ABOUT 3 ANGSTROM UNITES; DEGASSING THE COLUMN AND SIEVE MATERIAL; IMMERSING THE COLUMN IN LIQUID METHANE; AND PASSING THE IMPURE TRITIUM THROUGH SAID COLUMN TO PREFERENTIALLY ABSORB TRITIATED METHANE.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |