Patent US3221757A successfully refreshed from Google Patents.
US3221757A
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Method and apparatus for mixing gases
Assignee: Individual
•
Filing: 1963-03-29
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Granted: 1965-12-07
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Expires: 1983-03-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert P Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:27
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/10; B01F23/19; B01F23/191; B01F35/00; B01F35/80; B01F35/83; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0363; Y10T137/2496; Y10T137/2514; Y10T137/6416; Y10T137/6579; Y10T137/8593; Y10T137/87571; Y10T137/87652
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE PROCESS OF ACCURATELY MIXING FLUIDS OF DIFFERENT PHYSICAL CHARACTRISTICS TO OBTAIN A MIXTURE OF PREDETERMINED CONSTANT PHYSICAL CHARACTERISTICS WHICH COMPRISES, ENTRAINING SEPARATE STREAMS OF FLUIDS UNDER SOURCE PRESSURES, ADJUSTING THE PRESSURES OF THE STREAMS TO SUBSTANTIALLY THE SAME VALVE, MAINTAINING THE ADJUSTED PRESSURE SUBSTANTIALLY CONSTANT IN A FIRST ONE OF THE SEPARATE STREAMS, CONTROLLING THE PRESSURE IN A SECOND ONE OF THE SEPARATE STREAMS IN ACCORDANCE WITH THE PRESSURE IN THE FIRST STREAM, REDUCING THE PRESSURE IN EACH STREAM IN SUBSTANTIALLY EQUAL AND SIGNIFICANT AMOUNTS, AND COMBINING THE SEPARATE STREAMS OF REDUCED PRESSURE INTO A SINGLE COMINGLED STREAM.
Claim 2
Dependent Claim
99 words
THE PROCESS OF ACCURATELY MIXING FLUIDS OF DIFFERENT PHYSICAL CHARACTRISTICS TO OBTAIN A MIXTURE OF PREDETERMINED CONSTANT PHYSICAL CHARACTERISTICS WHICH COMPRISES, ENTRAINING SEPARATE STREAMS OF FLUIDS UNDER SOURCE PRESSURES, ADJUSTING THE PRESSURES OF THE STREAMS TO SUBSTANTIALLY THE SAME VALVE, MAINTAINING THE ADJUSTED PRESSURE SUBSTANTIALLY CONSTANT IN A FIRST ONE OF THE SEPARATE STREAMS, CONTROLLING THE PRESSURE IN A SECOND ONE OF THE SEPARATE STREAMS IN ACCORDANCE WITH THE PRESSURE IN THE FIRST STREAM, REDUCING THE PRESSURE IN EACH STREAM IN SUBSTANTIALLY EQUAL AND SIGNIFICANT AMOUNTS, AND COMBINING THE SEPARATE STREAMS OF REDUCED PRESSURE INTO A SINGLE COMINGLED STREAM.
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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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |