Patent US4222828A successfully refreshed from Google Patents.
Patent US3281958A successfully refreshed from Google Patents.
US3281958A
Expired / Lapsed
US
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Material processing apparatus
Assignee: C G SARGENT'S SONS CORP
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Filing: 1963-03-12
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Granted: 1966-11-01
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Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 Robert D Lambert
- 👤 David S Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:44
CPC Classifications
F; F26; F26B; F26B9/00; F26B9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN APPARATUS FOR USE IN THE TREATMENT OF MATERIALS WITH A GASEOUS FLUID, A SUPPORT FOR THE MATERIAL, A TREATING CHAMBER IN WHICH THE SUPPORT IS LOCATED, FIRST AND SECOND VERTICAL CONDUITS LATERALLY OF SAID CHAMBER, GAS CIRCULATING MEANS IN SAID FIRST CONDUIT HAVING ITS INTAK IN COMMUNICATION WITH THE SECOND CONDUIT, FIRST AND SECOND INLET CONDUITS IN COMMUNICATION WITH THE CHAMBER ONE ABOVE AND THE OTHER BELOW SAID FIRST AND SECOND CONDUITS AND SAID SUPPORT, MEANS ADJUSTABLE TO PLACE EITHER ONE OF SAID VERTICAL CONDUITS IN COMMUNICATION WITH EITHER OF ONE OF SAID CONDUITS, AND MEANS TO CLOSE THE INLET ENDS OF SAID INLET CONDUITS.
Claim 2
Dependent Claim
106 words
IN APPARATUS FOR USE IN THE TREATMENT OF MATERIALS WITH A GASEOUS FLUID, A SUPPORT FOR THE MATERIAL, A TREATING CHAMBER IN WHICH THE SUPPORT IS LOCATED, FIRST AND SECOND VERTICAL CONDUITS LATERALLY OF SAID CHAMBER, GAS CIRCULATING MEANS IN SAID FIRST CONDUIT HAVING ITS INTAK IN COMMUNICATION WITH THE SECOND CONDUIT, FIRST AND SECOND INLET CONDUITS IN COMMUNICATION WITH THE CHAMBER ONE ABOVE AND THE OTHER BELOW SAID FIRST AND SECOND CONDUITS AND SAID SUPPORT, MEANS ADJUSTABLE TO PLACE EITHER ONE OF SAID VERTICAL CONDUITS IN COMMUNICATION WITH EITHER OF ONE OF SAID CONDUITS, AND MEANS TO CLOSE THE INLET ENDS OF SAID INLET CONDUITS.
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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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |