US3270802A
Expired / Lapsed
US
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Method and apparatus for varying thermal conductivity
Assignee: Individual
•
Filing: 1963-01-10
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Granted: 1966-09-06
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Expires: 1983-01-10
Abstract
No abstract record available.
Inventors
- 👤 Jay G Lindberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:29
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/192; B; B64; B64G; B64G1/00; B64G1/22; B64G1/46; B64G1/50; B64G1/52; B64G1/58; F; F17; F17C; F17C13/00; F17C13/02; F17C13/026; F28; F28F; F28F13/00; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; F28F2013/005; F28F2013/008
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A METHOD FOR REGULATING HEAT FLOW COMPRISING THE STEPS OF INTERPOSING A GAS PERMEATED INSULATING MATERIAL BETWEEN A REGION HAVING RELATIVELY HIGH TEMPEATURE AND A REGION HAVING RELATIVELY LOW TEMPERATURE, TRANSFERRING HEAT FROM THE REGION HAVING RELATIVELY HIGH TEMPERATURE TO THE INSULATING MATERIAL, TRANSFERRING HEAT FROM THE INSULATING MATERIAL TO THE REGION OF RELATIVELY LOW TEMPERATURE, SENSING A QUANTITY HAVING A KNOWN RELATION TO THE AMOUNT OF HEAT TRANSFERRED IN ONE OF SAID TRANSFERRING STEPS, AND
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |