US4072590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for separating isotopes from gaseous mixtures
Assignee: Kraftwerk Union AG
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Filing: 1975-05-15
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Granted: 1978-02-07
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Expires: 1995-05-15
Abstract
Abstract To separate isotopes from a gaseous mixture containing isotopes and a chemical reaction partner, the reaction between the partner and the isotope to be separated can be directed by a laser beam having a narrow band of wave lengths molecularly exciting the isotope to be separated. To maximize such an effect, the gaseous mixture is held inside of a laser cavity chamber with the cavity chamber providing at both ends with completely reflecting end plates, the laser being operated to form a resonating wave which travels back and forth through the mixture.
Inventors
- 👤 Hans-Joachim Niemann
- 👤 Eberhard Schuster
- 👤 Arno Kersting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:54
CPC Classifications
B; B01; B01D; B01D59/00; B01D59/34
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
76 words
A method for chemically separating isotopes from a gaseous mixture containing isotopes and a chemical reaction partner, by a reaction directed by a laser beam having a narrow band of wave lengths molecularly exciting mainly the isotope to be separated and thereby promoting its reaction with the reaction partner; wherein the improvement comprises holding said mixture inside of a laser resonator cavity chamber and forming a resonating wave within the cavity chamber passing through the mixture.
Claim 2
Independent Claim
76 words
A method for chemically separating isotopes from a gaseous mixture containing isotopes and a chemical reaction partner, by a reaction directed by a laser beam having a narrow band of wave lengths molecularly exciting mainly the isotope to be separated and thereby promoting its reaction with the reaction partner; wherein the improvement comprises holding said mixture inside of a laser resonator cavity chamber and forming a resonating wave within the cavity chamber passing through the mixture.
Claim 3
Dependent Claim
24 words
The method of claim 1 in which said wave is substantially completely reflected back and forth in the cavity chamber and through the mixture.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |