US3171772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced plastic covering plate
Assignee: Skanska AB
•
Filing: 1961-04-27
•
Granted: 1965-03-02
•
Expires: 1981-04-27
Abstract
No abstract record available.
Inventors
- 👤 Lomar Stig Bertil Simon
- 👤 Andersson Ivar Olof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:54
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/18; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/172; Y10T442/174
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A COVERING PLATE FOR THE BUILDING INDUSTRY, COMPRISING A MIXTURE OF MINERAL MATERIAL BEING COMPOSED SUCH THAT THE MAJOR VOLUME PART OF THE MIXTURE COMPRISES COARSE GRAINED MATERIAL THAT MAKES THE COLOR AND STRUCTURE OF THE MINERAL CLEARLY VISIBLE WHEREAS THE OTHER PART OF THE MINERAL MATERIAL CONSISTS OF A PRACTICALLY UNCOLORED SUBSTANTIALLY FINE GRAINED MINERAL MATERIAL, AND THAT THE MINERAL GRAIN MIXTURE IS MIXED WITH A BINDER CONSISTING OF A COMPLETELY POLYMERIZABLE SUBSTANCE WHICH, DURING ITS POLYMERIZATION, EVOLVES NO GAS, VAPOR OR LIQUID, THE GRAIN SIZE GRADUALLY DECREASING FROM ONE SIDE OF THE PLATE THROUGH THE THICKNESS TO THE OPPOSITE SIDE, THE COARSE GRAINED MATERIAL SUBSTANTIALLY BEING LOCATED ON ONE SIDE OF THE PLATE, WHEREAS THE
Claim 2
Dependent Claim
117 words
A COVERING PLATE FOR THE BUILDING INDUSTRY, COMPRISING A MIXTURE OF MINERAL MATERIAL BEING COMPOSED SUCH THAT THE MAJOR VOLUME PART OF THE MIXTURE COMPRISES COARSE GRAINED MATERIAL THAT MAKES THE COLOR AND STRUCTURE OF THE MINERAL CLEARLY VISIBLE WHEREAS THE OTHER PART OF THE MINERAL MATERIAL CONSISTS OF A PRACTICALLY UNCOLORED SUBSTANTIALLY FINE GRAINED MINERAL MATERIAL, AND THAT THE MINERAL GRAIN MIXTURE IS MIXED WITH A BINDER CONSISTING OF A COMPLETELY POLYMERIZABLE SUBSTANCE WHICH, DURING ITS POLYMERIZATION, EVOLVES NO GAS, VAPOR OR LIQUID, THE GRAIN SIZE GRADUALLY DECREASING FROM ONE SIDE OF THE PLATE THROUGH THE THICKNESS TO THE OPPOSITE SIDE, THE COARSE GRAINED MATERIAL SUBSTANTIALLY BEING LOCATED ON ONE SIDE OF THE PLATE, WHEREAS THE
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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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |