Patent US2618576A successfully refreshed from Google Patents.
US2618576A
Expired / Lapsed
US
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Sheets-xsheet i
Assignee: —
•
Filing: —
•
Granted: 1952-11-18
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Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:44
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/06; C04B20/00; C04B20/0048; C04B28/065; C04B40/00; C04B40/0028; C04B41/00; C04B41/009; C04B41/53
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
THE PROCESS OF COATING A SURFACE WITH A LIQUID CEMENT INCLUDING ARGILLO-CALCAREOUS SUBSTANCES, WHICH COMPRISES MECHANICALLY MIXING FINELY PULVERIZED ARGILLO-CALCAREOUS MATERIALS WITH WATER IN A CLOSED TANK FOR HYDRATING THE MATERIALS WHILE MAINTAINING THE MIXTURE UNDER A GENERALLY STATIC AIR PRESSURE, OF ABOUT ONE-HUNDRED POUNDS PER SQUARE INCH, AND THEN SPRAYING THE LIQUID MIXTURE ONTO SUCH SURFACE WHILE SUCH MIXTURE IS IN FLUID FORM AND UNDER A PRESSURE OF ABOUT SIXTY POUNDS PER SQUARE INCH.
References Cited (Backward Citations)
US1506089A
Cited
US1751343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |