Patent US2595465A successfully refreshed from Google Patents.
US2595465A
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US
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Structures involving particles or mineral granules treated with organic silicon compounds and method of making
Assignee: 3M Co
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Filing: 1944-11-24
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Granted: 1952-05-06
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Expires: 1964-11-24
Abstract
No abstract record available.
Inventors
- 👤 Howard B Keene
- 👤 Douglas A Anderson
- 👤 Paul H Aldrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:46
CPC Classifications
E; E04; E04D; E04D7/00; E04D7/005; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438; Y10T428/24388; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE PROCESS OF FORMING COLORED ROOFING GRANULES HAVING IMPROVED ANCHORAGE IN ASPHALT COATINGS, COMPRISING: COATING BASE GRANULES WITH A COLORED COATING COMPOSITION COMPRISING WATER-SOLUBLE SODIUM SILICATE CONVERTING THE SILICATE TO INSOLUBLE SILICA AT A TEMPERATURE NOT ABOVE ABOUT 600* F. AND WITHOUT REMOVING THE SMALL BUT APPRECIABLE AMOUNT OF WATER-SOLUBLE MATERIAL REMAINING AFTER SUCH CONVERSION; AND APPLYING TO THE HYDROPHILIC SURFACE OF THE RESULTANT GRANULES A THIN COATING OF A SOLUTION IN A HYDROCARBON OF A SUBSTITUTED SILICANE CAPABLE OF MOLECULAR ORIENTATION WITH RESPECT TO A HYDROPHILIC MINERAL SURFACE SAID SILICANE BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKOXY AND ARYLOXY SILICANES CONTAINING AT LEAST ONE READILY HYDROXLYZABLE INORGANIC RADICAL ATTACHED TO SILICON.
Claim 2
Dependent Claim
115 words
THE PROCESS OF FORMING COLORED ROOFING GRANULES HAVING IMPROVED ANCHORAGE IN ASPHALT COATINGS, COMPRISING: COATING BASE GRANULES WITH A COLORED COATING COMPOSITION COMPRISING WATER-SOLUBLE SODIUM SILICATE CONVERTING THE SILICATE TO INSOLUBLE SILICA AT A TEMPERATURE NOT ABOVE ABOUT 600* F. AND WITHOUT REMOVING THE SMALL BUT APPRECIABLE AMOUNT OF WATER-SOLUBLE MATERIAL REMAINING AFTER SUCH CONVERSION; AND APPLYING TO THE HYDROPHILIC SURFACE OF THE RESULTANT GRANULES A THIN COATING OF A SOLUTION IN A HYDROCARBON OF A SUBSTITUTED SILICANE CAPABLE OF MOLECULAR ORIENTATION WITH RESPECT TO A HYDROPHILIC MINERAL SURFACE SAID SILICANE BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKOXY AND ARYLOXY SILICANES CONTAINING AT LEAST ONE READILY HYDROXLYZABLE INORGANIC RADICAL ATTACHED TO SILICON.
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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) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |