US3265124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated graphite products
Assignee: Falls Industries Inc
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Filing: 1964-07-10
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Granted: 1966-08-09
•
Expires: 1984-07-10
Abstract
No abstract record available.
Inventors
- 👤 Reys John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:48
CPC Classifications
F; F28; F28F; F28F19/00; F28F19/02; F28F19/04; F28F21/00; F28F21/02; Y; Y10; Y10S; Y10S165/00; Y10S165/905; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/1393; Y10T428/30; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
A HEAT EXCHANGER TUBE COMPRISING A GRAPHITE TUBE, A SMOOTH, SUBSTANTIALLY UNIFORM COATING OF A CHEMICALLY INERT HIGH THERMAL STABILITY ANTI-FOULING RESIN SELECTED FROM THE GROUP CONSISTING OF POLYTETRAFLUOROETHYLENE AND POLYTRIFLUOROCHLORETHYLENE ON ONE SURFACE OF APPROX-
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |