Patent US3138475A successfully refreshed from Google Patents.
US3138475A
Expired / Lapsed
US
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Filler and meterial with an artificial pearly gloss and method of producing the same
Assignee: Schott AG
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Filing: 1960-11-04
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Granted: 1964-06-23
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Expires: 1980-11-04
Abstract
No abstract record available.
Inventors
- 👤 Schroder Hubert
- 👤 Kaufmann Reinhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:04
CPC Classifications
B; B44; B44F; B44F9/00; B44F9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR PRODUCING FILLERS HAVING AN ARTIFICAL PEARLY GLOSS WHICH COMPRISES COATING A SOLID MATERIAL SUPPORT SURFACE IN THE FORM OF A FLEXIBLE BAND WITH A LIQUID WATER CONTAINING SOLUTION OF A HYDROLYZABLE METALLIC COMPOUND OF AN AT LEAST TRIVALENT METAL, AND CONVERTING THE RESULTING LIQUID COATING ON SAID BAND INTO AN OXIDE LAYER BY DRY HEATING IN THE ABSENCE OF EXTRANEOUS MOISTURE, SAID BAND HAVING A HIGHER COEFFICIENT OF THERMAL EXPANSION THAN SAID OXIDE LAYER, AND RECOVERING THE HEATED OXIDE LAYER IN THE FORM OF DRY FLAKES FROM THE BAND.
Claim 2
Dependent Claim
92 words
A PROCESS FOR PRODUCING FILLERS HAVING AN ARTIFICAL PEARLY GLOSS WHICH COMPRISES COATING A SOLID MATERIAL SUPPORT SURFACE IN THE FORM OF A FLEXIBLE BAND WITH A LIQUID WATER CONTAINING SOLUTION OF A HYDROLYZABLE METALLIC COMPOUND OF AN AT LEAST TRIVALENT METAL, AND CONVERTING THE RESULTING LIQUID COATING ON SAID BAND INTO AN OXIDE LAYER BY DRY HEATING IN THE ABSENCE OF EXTRANEOUS MOISTURE, SAID BAND HAVING A HIGHER COEFFICIENT OF THERMAL EXPANSION THAN SAID OXIDE LAYER, AND RECOVERING THE HEATED OXIDE LAYER IN THE FORM OF DRY FLAKES FROM THE BAND.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |