US3616103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Textured cementitious sheet
Assignee: Johns Manville Corp
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Filing: 1969-05-05
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Granted: 1971-10-26
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Expires: 1989-05-05
Abstract
Abstract The textured surface of an asbestos-cement sheet covered with steam cure bloom or normal cure bloom is abraded in a particular manner to remove bloom from certain areas of the surface to produce a highly attractive simulated stone decorative sheet.
Inventors
- 👤 Norman Shirk Greiner
- 👤 James Vincent Magee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:18
CPC Classifications
B; B44; B44F; B44F9/00; B44F9/04; B28; B28B; B28B11/00; B28B11/08; B28B11/0818; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24479; Y10T428/24612
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
28 words
A cementitious sheet as recited in claim 1, wherein the composition of the sheet comprises asbestos fibers and the hydrothermal reaction product of hydraulic cement, silica and lime.
Claim 2
Dependent Claim
22 words
A cementitious sheet as recited in claim 1, wherein the textured surface has a polished appearance, particularly on the high portions thereof.
Claim 3
Dependent Claim
44 words
A cementitious sheet as recited in claim 3, wherein the texture of the sheet simulates that of stone and the varying shades of color of the base cementitious sheet and the varying degrees of polished surface contribute significantly to the appearance of polished stone.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |