US2995451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for treating materials
Assignee: Individual
•
Filing: 1961-03-27
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Granted: 1961-08-08
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Expires: 1981-03-27
Abstract
No abstract record available.
Inventors
- 👤 John M Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:12
CPC Classifications
F; F28; F28F; F28F19/00; F28F19/008; A; A23; A23G; A23G3/00; A23G3/02; A23G3/0205; A23G3/0215; A23G3/0226; B; B01; B01B; B01B1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS OF TREATING MATERIAL WHICH COMPRISES DIRECTING A STARTING MATERIAL UNDER PRESSURE INTO A CLOSED CHAMBER, VARYING THE TEMPERATURE OF THE MATERIAL IN THE CHAMBER, MOVING A SCRAPER MEMBER ALONG THE WALL OF THE CHAMBER BY MEANS OF THE PRESSURE CREATED BY THE MATERIAL IMPINGING TNEREAGAINST, AGITATING THE MATERIAL UNDERGOING TREATMENT, AND DISCHARGING THE TREATED MATERIAL FROM THE CHAMBER.
Claim 2
Dependent Claim
60 words
A PROCESS OF TREATING MATERIAL WHICH COMPRISES DIRECTING A STARTING MATERIAL UNDER PRESSURE INTO A CLOSED CHAMBER, VARYING THE TEMPERATURE OF THE MATERIAL IN THE CHAMBER, MOVING A SCRAPER MEMBER ALONG THE WALL OF THE CHAMBER BY MEANS OF THE PRESSURE CREATED BY THE MATERIAL IMPINGING TNEREAGAINST, AGITATING THE MATERIAL UNDERGOING TREATMENT, AND DISCHARGING THE TREATED MATERIAL FROM THE CHAMBER.
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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |