Patent DE972541C successfully refreshed from Google Patents.
Patent US4394336A successfully refreshed from Google Patents.
US4394336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of tablets of sodium dichloroisocyanurate
Assignee: Shikoku Chemicals Corp
•
Filing: 1981-07-20
•
Granted: 1983-07-19
•
Expires: 2001-07-20
Abstract
Abstract Production of tablets of sodium dichloroisocyanurate which dissolve gradually and smoothly in water without causing any undesirable collapse and swelling. The sodium dichloroisocyanurate with a regulated moisture content is tabletted and then the resulting tablets are thermally treated under specific conditions.
Inventors
- 👤 Tadao Shimamura
- 👤 Junji Nakano
- 👤 Yasufumi Seo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:33
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0002; A61K9/0007
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
66 words
A method of producing sodium dichloroisocyanurate tablets capable of gradually and smoothly dissolving in water, comprising tabletting particulate sodium dichloroisocyanurate with a moisture content of from about 7 to about 20 weight %, and thermally treating the resulting tablets at a temperature of from about 50° to about 100° C. under a condition such that the water content in said tablets is not lost by vaporization.
Claim 2
Independent Claim
66 words
A method of producing sodium dichloroisocyanurate tablets capable of gradually and smoothly dissolving in water, comprising tabletting particulate sodium dichloroisocyanurate with a moisture content of from about 7 to about 20 weight %, and thermally treating the resulting tablets at a temperature of from about 50° to about 100° C. under a condition such that the water content in said tablets is not lost by vaporization.
Claim 3
Dependent Claim
26 words
A method as claimed in claim 1, wherein the thermal treatment is carried out with hot air having a relative humidity of at least about 50%.
Claim 4
Dependent Claim
47 words
A method as claimed in claim 1, wherein sodium dichloroisocyanurate with a moisture content of from about 14 to about 20 weight % is tabletted and then the resulting tablets are thermally treated at a temperature of from about 50° to about 100° C. with hot air.
Claim 5
Dependent Claim
45 words
A method as claimed in claim 1, wherein sodium dichloroisocyanurate with a moisture content of from about 7 to about 14 weight % is tabletted and then the resulting tablets are thermally treated with hot air having a relative humidity of at least about 50%.
Claim 6
Dependent Claim
24 words
A method as claimed in claim 1, wherein the formed tablets are heated at a temperature ranging from about 65° to about 80° C.
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) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |