US3169576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe line for conveying sulfur and other hot liquids
Assignee: Freeport Minerals Co
•
Filing: 1959-07-01
•
Granted: 1965-02-16
•
Expires: 1979-07-01
Abstract
No abstract record available.
Inventors
- 👤 Clarence O Lee
- 👤 Clifford M Cockrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:37
CPC Classifications
F; F16; F16L; F16L53/00; F16L53/30; F16L53/32; Y; Y10; Y10S; Y10S138/00; Y10S138/05; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A COMPOSITE PIPING ARRANGEMENT FOR CONVEYING HOT LIQUID MATERIAL LONG DISTANCES WHICH COMPRISES A CENTRAL PIPE FOR CONVEYING THE HOT LIQUID, AN INSULATED HEATING LINE LARGER THAN AND SURROUNDING BUT UNATTACHED TO SAID CENTRAL PIPE THROUGH WHICH HOT FLUID CAN BE CIRCULATED TO MAINTAIN THE HOT CONDITION OF THE LIQUID IN SAID CENTRAL PIPE, AN OUTSIDE JACKET CASING SURROUNDING SAID HEATING LINE AND SPACED THEREFROM, ANTI-FRICTION SUPPORTING MEANS MOUNTED ALONG AND AROUND SAID INSULATED HEATING LINE AT
Claim 2
Dependent Claim
77 words
A COMPOSITE PIPING ARRANGEMENT FOR CONVEYING HOT LIQUID MATERIAL LONG DISTANCES WHICH COMPRISES A CENTRAL PIPE FOR CONVEYING THE HOT LIQUID, AN INSULATED HEATING LINE LARGER THAN AND SURROUNDING BUT UNATTACHED TO SAID CENTRAL PIPE THROUGH WHICH HOT FLUID CAN BE CIRCULATED TO MAINTAIN THE HOT CONDITION OF THE LIQUID IN SAID CENTRAL PIPE, AN OUTSIDE JACKET CASING SURROUNDING SAID HEATING LINE AND SPACED THEREFROM, ANTI-FRICTION SUPPORTING MEANS MOUNTED ALONG AND AROUND SAID INSULATED HEATING LINE AT
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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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |