US3740195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and device for making standard analysis gas
Assignee: Individual
•
Filing: 1971-01-13
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Granted: 1973-06-19
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Expires: 1991-01-13
Abstract
Abstract TRACE COMPONENT IS PRODUCED BY DECOMPOSITION OF A PREDETERMINED AMOUNT OF A SALT AND MIXED WITH CARRIER GAS FOR CONCENTRATIONS ON ORDER OF PARTS PER MILLION AND BILLION. BATCHES OF STANDARD GAS MIXTURES ARE MADE BY BREAKING AN AMPULE CONTAINING SALT PYROLYSIS PRODUCT IN CARRIER GAS. CONTINUOUS PROCESS DECOMPOSES SALT ON A STRIP MOVING THROUGH ATMOSPHERE OF CARRIER GAS WITH CONTINUOUS DRAWING OFF OF MIXTURE OF CARRIER GAS AND TRACE COMPONENT AT ZONE OF DECOMPOSTION OF SALT.
Inventors
- 👤 W Lietzau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:57
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/0004; G01N33/0006; Y; Y10; Y10T; Y10T436/00; Y10T436/10; Y10T436/100833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |