US3307621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer apparatus
Assignee: Celanese Corp
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Filing: 1964-12-29
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Granted: 1967-03-07
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Expires: 1984-12-29
Abstract
No abstract record available.
Inventors
- 👤 John K Whisnant
- 👤 Roger A Dysart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:11
CPC Classifications
D; D02; D02J; D02J13/00; D02J13/005; Y; Y10; Y10S; Y10S165/00; Y10S165/135; Y10S165/139; Y10S165/156; Y10S165/158; Y10S165/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A UNIT OF UNIFORMLY HEATED ROLLS COMPRISING A PLURALITY OF ROLL UNITS WHEREIN EACH OF SAID ROLL UNITS COMPRISES A HOLLOW ROTATABLE ROLL, A STATIONARY HEAT RADIATING CORE, SAID CORE PROJECTED WITHIN THE HOLLOW PORTION OF SAID HOLLOW ROTATABLE ROLL SUBSTANTIALLY CONFORMING TO THE SHAPE OF SAID HOLLOW PORTION, MEANS FOR HEATING SAID CORE AND NON-VAPOR HEAT CONDUCTING FLUID-LIKE MATERIAL SELF CONTAINED WITHIN SAID HOLLOW ROTATABLE ROLL UNIFORMLY DISTRIBUTED AND INTIMATELY CONTACTING THE INNER WALL OF
Claim 2
Dependent Claim
76 words
A UNIT OF UNIFORMLY HEATED ROLLS COMPRISING A PLURALITY OF ROLL UNITS WHEREIN EACH OF SAID ROLL UNITS COMPRISES A HOLLOW ROTATABLE ROLL, A STATIONARY HEAT RADIATING CORE, SAID CORE PROJECTED WITHIN THE HOLLOW PORTION OF SAID HOLLOW ROTATABLE ROLL SUBSTANTIALLY CONFORMING TO THE SHAPE OF SAID HOLLOW PORTION, MEANS FOR HEATING SAID CORE AND NON-VAPOR HEAT CONDUCTING FLUID-LIKE MATERIAL SELF CONTAINED WITHIN SAID HOLLOW ROTATABLE ROLL UNIFORMLY DISTRIBUTED AND INTIMATELY CONTACTING THE INNER WALL OF
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |