US2900668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of granular perborates
Assignee: Henkel und Cie AG
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Filing: 1956-10-31
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Granted: 1959-08-25
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Expires: 1976-10-31
Abstract
No abstract record available.
Inventors
- 👤 Hubner Walter Willi Georg
- 👤 Lange Ernst
- 👤 Rindlisbacher Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:11
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/12; C01B15/126; Y; Y10; Y10S; Y10S264/00; Y10S264/42; Y10S425/00; Y10S425/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
METHOD FOR THE CONVERSION FINELY GRANULAR PER BORATES INTO A MORE COARSELY GRANULAR FORM WHICH COMPRISES CONVERTING A FINELY GRANULAR PERBORATE CONTAINING WATER OF CRYSTALLIZATION INTO A SOFTENED DEFORMABLE MASS UNDER HEAT AND PRESSURE, WITHOUT CAUSING THE SAME TO MELT, MOLDING SAID MASS INTO A PLASTICALLY DEFORMABLE STRUCTURE HAVING ITS GREATEST CROSS SECTIONAL SIZE NOT SUBSTANTIALLY IN EXCESS OF THE GRAIN SIZE OF THE GRANULAR PERBORATE TO BE PRODUCED AND THEREAFTER PROMPTLY SOLIDIFYING MOLDED PERBORATE BY COOLING WITH A GAS, AND RECOVERING GRANULAR PERBORATE IN SAID MORE COARSELY GRANULAR FORM.
Claim 2
Dependent Claim
90 words
METHOD FOR THE CONVERSION FINELY GRANULAR PER BORATES INTO A MORE COARSELY GRANULAR FORM WHICH COMPRISES CONVERTING A FINELY GRANULAR PERBORATE CONTAINING WATER OF CRYSTALLIZATION INTO A SOFTENED DEFORMABLE MASS UNDER HEAT AND PRESSURE, WITHOUT CAUSING THE SAME TO MELT, MOLDING SAID MASS INTO A PLASTICALLY DEFORMABLE STRUCTURE HAVING ITS GREATEST CROSS SECTIONAL SIZE NOT SUBSTANTIALLY IN EXCESS OF THE GRAIN SIZE OF THE GRANULAR PERBORATE TO BE PRODUCED AND THEREAFTER PROMPTLY SOLIDIFYING MOLDED PERBORATE BY COOLING WITH A GAS, AND RECOVERING GRANULAR PERBORATE IN SAID MORE COARSELY GRANULAR FORM.
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |