US3276949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tablets comprising calcium hypochlorite and sodium sulfate and method of preparation
Assignee: Olin Corp
•
Filing: 1963-05-07
•
Granted: 1966-10-04
•
Expires: 1983-05-07
Abstract
No abstract record available.
Inventors
- 👤 Homer L Robson
- 👤 Roy H Hodges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:10
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C01; C01B; C01B11/00; C01B11/04; C01B11/06; C01B11/064; C11; C11D; C11D17/00; C11D17/0039; C11D3/00; C11D3/395; C11D3/3953
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A TABLET CONSISTING OF A CORE AND A SHELL: (A) SAID CORE HAVING THE FORM OF A TABLET CONSISTING ESSENTIALLY OF 0.8 TO 2 PARTS BY WEIGHT OF PARTICLES OF ANHYDROUS SODIUM SULFATE AND ONE PART BY WEIGHT OF PARTICLES OF CALCIUM HYPOCHLORITE, ALL OF SAID PERTICLES PRIOR TO TABLETTING PASSING 30 MESH AND AT LEAST 25 PERCENT BY WEIGHT OF THE PARTICLES OF EACH OF SAID COMPONENTS PASSING 100 MESH; (B) SAID SHELL AT LEAST PARTIALLY ENCLOSING SAID CORE AND CONSISTING ESSENTIALLY OF A COMPRESSED MIXTURE OF 5 TO 25 PARTS BY WEIGHT OF PARTICLES OF INERT DILUENT ALKALI METAL SALT, 0.8 TO 2 PARTS OF PARTICLES OF ANHYDROUS SODIUM SULFATE AND ONE PART OF PARTICLES OF CALCIUM HYPOCHLORITE, SUBSTANTIALLY ALL OF SAID PARTICLES PRIOR TO COMPRESSION PASSING 20 MESH AND RETAINED ON 100 MESH.
Claim 2
Dependent Claim
136 words
A TABLET CONSISTING OF A CORE AND A SHELL: (A) SAID CORE HAVING THE FORM OF A TABLET CONSISTING ESSENTIALLY OF 0.8 TO 2 PARTS BY WEIGHT OF PARTICLES OF ANHYDROUS SODIUM SULFATE AND ONE PART BY WEIGHT OF PARTICLES OF CALCIUM HYPOCHLORITE, ALL OF SAID PERTICLES PRIOR TO TABLETTING PASSING 30 MESH AND AT LEAST 25 PERCENT BY WEIGHT OF THE PARTICLES OF EACH OF SAID COMPONENTS PASSING 100 MESH; (B) SAID SHELL AT LEAST PARTIALLY ENCLOSING SAID CORE AND CONSISTING ESSENTIALLY OF A COMPRESSED MIXTURE OF 5 TO 25 PARTS BY WEIGHT OF PARTICLES OF INERT DILUENT ALKALI METAL SALT, 0.8 TO 2 PARTS OF PARTICLES OF ANHYDROUS SODIUM SULFATE AND ONE PART OF PARTICLES OF CALCIUM HYPOCHLORITE, SUBSTANTIALLY ALL OF SAID PARTICLES PRIOR TO COMPRESSION PASSING 20 MESH AND RETAINED ON 100 MESH.
References Cited (Backward Citations)
US871612A
Cited
US1678987A
Cited
US2736682A
Cited
US2887438A
Cited
US2987445A
Cited
US3062720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |