Patent US2600812A successfully refreshed from Google Patents.
US2600812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating pipe covering
Assignee: —
•
Filing: —
•
Granted: 1952-06-17
•
Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:33
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; F; F16; F16L; F16L59/00; F16L59/02; F16L59/028; Y; Y10; Y10S; Y10S106/00; Y10S106/01; Y10S106/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A COMPRESSIBLE COMPOSITION, FOR DRY PRESSING SEMI-CYLINDRICAL INSULATING PIPE COVERING SECTIONS, CONSISTING OF EXPANDED PERLITE GRANULES COMPOSED OF THIN WALLED BULBOUS CELLS ADAPTED TO KNIT AND FORM A SOLID CAKE UNDER COMPRESSION, OF PLASTER GRADE AGGREGATE AND HAVING A DENSITY OF EIGHT POUNDS PER CUBIC FOOT, ONE CUBIC FOOT; A BINDER CONSISTING OF SODIUM SILICATE 40* BAUME, ONE HALF GALLON; AND A SETTING AGENT CONSISTING OF POWDERED ROCK SALT TEN OUNCES.
Claim 2
Dependent Claim
71 words
A COMPRESSIBLE COMPOSITION, FOR DRY PRESSING SEMI-CYLINDRICAL INSULATING PIPE COVERING SECTIONS, CONSISTING OF EXPANDED PERLITE GRANULES COMPOSED OF THIN WALLED BULBOUS CELLS ADAPTED TO KNIT AND FORM A SOLID CAKE UNDER COMPRESSION, OF PLASTER GRADE AGGREGATE AND HAVING A DENSITY OF EIGHT POUNDS PER CUBIC FOOT, ONE CUBIC FOOT; A BINDER CONSISTING OF SODIUM SILICATE 40* BAUME, ONE HALF GALLON; AND A SETTING AGENT CONSISTING OF POWDERED ROCK SALT TEN OUNCES.
References Cited (Backward Citations)
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Cited
US1379639A
Cited
US1693015A
Cited
US1966069A
Cited
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Cited
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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) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |