US2903409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating and coskgsion protective
Assignee: —
•
Filing: —
•
Granted: 1959-09-08
•
Expires: 1976-09-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:12
CPC Classifications
C; C10; C10C; C10C3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN INSULATING BODY OF DISCRETE MOBLE PARTICLES OF GRANULAR MATERIAL FOR PROTECTING UNDERGROUND PIPING FROM CORROSION WITHOUT SUCH AN APPLICATION OF HEAT TO THE PARTICLES AS WOULD FORM A SINTERED OR CONSOLIDATED ZONE, SAID MATERIAL BEING CHOSEN FROM THE GROUP CONSISTING OF NATURAL ASPHALTITES, ASPHALITIC PYROBITUMENS AND GILSONITE HAVING A SNITERING TEMPERATUR ABOVE THE MAXIMUM TEMPERATURE ATTAINED BY SAID PIPING, SAID PARTICLES HAVING A SCREEN ANALYSIS SUBSTANTIALLY WITHIN THE AREA IHBEI OF THE TRILINEAR DIAGRAM OF FIGURE 1.
Claim 2
Dependent Claim
78 words
AN INSULATING BODY OF DISCRETE MOBLE PARTICLES OF GRANULAR MATERIAL FOR PROTECTING UNDERGROUND PIPING FROM CORROSION WITHOUT SUCH AN APPLICATION OF HEAT TO THE PARTICLES AS WOULD FORM A SINTERED OR CONSOLIDATED ZONE, SAID MATERIAL BEING CHOSEN FROM THE GROUP CONSISTING OF NATURAL ASPHALTITES, ASPHALITIC PYROBITUMENS AND GILSONITE HAVING A SNITERING TEMPERATUR ABOVE THE MAXIMUM TEMPERATURE ATTAINED BY SAID PIPING, SAID PARTICLES HAVING A SCREEN ANALYSIS SUBSTANTIALLY WITHIN THE AREA IHBEI OF THE TRILINEAR DIAGRAM OF FIGURE 1.
References Cited (Backward Citations)
US2265801A
Cited
US2668125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |