US2706178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydrated perborate products
Assignee: EIDP Inc
•
Filing: 1951-02-10
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Granted: 1955-04-12
•
Expires: 1971-02-10
Abstract
No abstract record available.
Inventors
- 👤 James H Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:06
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/055; C01B15/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
THE METHOD OF HYDRATING AND GRANULATING NONHYDRATED SODIUM PERBORATE COMPRISING ADDING WATER IN LIQUID FORM AND SAID NON-HYDRATED PERBORATE TO AN AGITATED BODY OF GRANULAT MATERIAL COMPRISING HYDRATED SODIUM PERBORATE, THE AMOUNT OF SAID NON-HYDRATED PERBORATE ADDED BEING SUCH THAT THE RESULTING MIXTURE CONTAINS NOT MORE THAN 25% THEREOF BASED ON THE WEIGHT OF HYDRATED PERBORATE PRESENT, AND THE AMOUNT OF SAID WATER ADDED BEING AT LEAST EQUAL TO THAT AMOUNT REQUIRED TO HYDRATE SAID ADDED NON-HYDRATED PERBORATE BUT NOT IN EXCESS OF 150% THEREOF, AND COUNTINUING AGITATION OF SAID MIXTURE DURING THE HYDRATION REACTION SAID BODY OF MATERIAL BEING MAINTAINED THROUGHOUT THE OPERATIONS AT A TEMPERATURE BELOW THE MELTING TEMPERATURE OF SAID HYDRATED PERBORATE.
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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) | 1958-04-11 | 1958-10-11 | 1959-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-11 | 1962-10-11 | 1963-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-11 | 1966-10-11 | 1967-04-12 | $7700.00 | Window Closed / Lapsed |