US2876200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making perborate containing detergents
Assignee: Procter and Gamble Co
•
Filing: 1955-04-08
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Granted: 1959-03-03
•
Expires: 1975-04-08
Abstract
No abstract record available.
Inventors
- 👤 Strain Bruce
- 👤 Stanley L Eaton
- 👤 Kenneth R Ericson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:55
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/39; B; B01; B01J; B01J2/00; C11D9/00; C11D9/04; C11D9/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS OF PRODUCING A NON-SEGREGATING GRANULAR DETERGENT PRODUCT HAVING BLEACHING POWER DURING USE IN AQUEOUS SOLUTIONS IN WASHING OPERATIONS, COMRISING ADMIXING SODIUM PERBORATE TETRAHYDRATE CRYSTALS WITH PREVIOUSLY SPRAY DRIED GRANULAR NON-CATIONIC SYNTHETIC ORGANIC DETERGENT AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 150*F. TO ABOUT 230*F., SAID TEMPERATURE BEING SUFFICIENT TO MELT SAID PREBORATE TETRAHYDRATE TO FORM A SOLUTION OF THE PERBORATE IN ITS WATER OF CRYSTALLIZATION, WHICH SOLUTION, WITHOUT SUBSTANTIAL DECOMPOSITION OF PERBORATE, IS ABSORBED BY OUTER PORES AND SURFACES OF DETERGENT GRANULES, THEN, PROMPTLY AND WITHIN FIVE MINUTES COOLING THE RESULTING PRODUCT BEFORE SUBSTANTIAL DECOMPOSITION OF PERBORATE OCCURS.
Claim 2
Dependent Claim
101 words
A PROCESS OF PRODUCING A NON-SEGREGATING GRANULAR DETERGENT PRODUCT HAVING BLEACHING POWER DURING USE IN AQUEOUS SOLUTIONS IN WASHING OPERATIONS, COMRISING ADMIXING SODIUM PERBORATE TETRAHYDRATE CRYSTALS WITH PREVIOUSLY SPRAY DRIED GRANULAR NON-CATIONIC SYNTHETIC ORGANIC DETERGENT AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 150*F. TO ABOUT 230*F., SAID TEMPERATURE BEING SUFFICIENT TO MELT SAID PREBORATE TETRAHYDRATE TO FORM A SOLUTION OF THE PERBORATE IN ITS WATER OF CRYSTALLIZATION, WHICH SOLUTION, WITHOUT SUBSTANTIAL DECOMPOSITION OF PERBORATE, IS ABSORBED BY OUTER PORES AND SURFACES OF DETERGENT GRANULES, THEN, PROMPTLY AND WITHIN FIVE MINUTES COOLING THE RESULTING PRODUCT BEFORE SUBSTANTIAL DECOMPOSITION OF PERBORATE OCCURS.
References Cited (Backward Citations)
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Cited
GB191508483A
Cited
DE428878C
Cited
US2308992A
Cited
US2491789A
Cited
US2524394A
Cited
US2657797A
Cited
US2706178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |