US4150110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated granules of polyacrylic alkali metal salts and method of producing same
Assignee: Nippon Kayaku Co Ltd
•
Filing: 1977-05-11
•
Granted: 1979-04-17
•
Expires: 1997-05-11
Abstract
Abstract Granules of polyacrylic alkali metal salts are coated with a water-insoluble but water-permeable coating agent.
Inventors
- 👤 Koichi Yoshida
- 👤 Hiroshi Ninomiya
- 👤 Fumihiro Sato
- 👤 Yasuo Ishii
- 👤 Yuichi Fujii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; A; A61; A61K; A61K31/00; A61K31/74; A61K31/765; A61K31/78; A61K9/00; A61K9/48; A61K9/50; A61K9/5005; A61K9/5015; A61K9/5021; A61K9/5026; A61K9/5036; A61K9/5042; A61K9/5047; A61P; A61P1/00; A61P1/04; C08J2333/00; C08J2333/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
32 words
The process for treating peptic ulcers in humans which comprises internally administering to said humans an effective amount of polyacrylic alkali metal salt granules coated with a water-insoluble but water-permeable coating agent.
Claim 2
Dependent Claim
32 words
The process for treating peptic ulcers in humans which comprises internally administering to said humans an effective amount of polyacrylic alkali metal salt granules coated with a water-insoluble but water-permeable coating agent.
Claim 3
Dependent Claim
26 words
The process for treating peptic ulcers as claimed in claim 1, wherein the polyacrylic alkali metal salt is sodium salt or potassium salt of polyacrylic acid.
Claim 4
Dependent Claim
25 words
The process for treating peptic ulcers as claimed in claim 1, whrein the polyacrylic alkali metal salt has a molecular weight of 3,000,000 to 8,000,000.
Claim 5
Dependent Claim
24 words
The process for treating peptic ulcers as claimed in claim 1, wherein the size of the coated granules is 16 to 100 mesh (Tyler).
Claim 6
Dependent Claim
74 words
The process for treating peptic ulcers as claimed in claim 1, wherein the water-insoluble but water-permeable coating agent is a material selected from the group consisting of (a) copolymer of acrylic acid, methacrylic acid and vinylpyridine, (b) copolymer of dimethylaminoethyl methacrylate and methacrylate ester, (c) ethyl cellulose, (d) hydroxypropylmethyl cellulose, (e) hydroxypropyl cellulose phthalate, (f) cellulose acetate phthalate, (g) polyvinyl acetal diethylamino acetate, (h) polyvinyl acetate, (i) cellulose acetate, (j) shellac and (k) zein.
Claim 7
Dependent Claim
23 words
The process for treating peptic ulcers as claimed in claim 1, wherein the coating is 2 to 15% by weight of the granule.
References Cited (Backward Citations)
FR927976A
Cited
US3073748A
Cited
US3577512A
Cited
US3576760A
Cited
US3900559A
Cited
US3901969A
Cited
US3901968A
Cited
US3901971A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |