US4673527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tablet granulation
Assignee: Autotrol Corp
•
Filing: 1985-05-20
•
Granted: 1987-06-16
•
Expires: 2005-05-20
Abstract
Abstract An improved granulation and tablet product for water treatment. One or more water treating agents are dispersed and entrapped in a water soluble polymeric material which is more water soluble than the water treating agent. The water treating agent is entrapped in a polymeric matrix by first treating the polymeric material with an alcohol, blending with the water treating agent and subsequently adding water to the admixed polymeric material and water treating agent.
Inventors
- 👤 Paul R. Goudy, Jr.
- 👤 Linn W. Cassedy
- 👤 Thomas S. Whitaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/28; C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; C02F1/5227; C02F1/54; C02F1/68; C02F1/685; C02F1/688
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
81 words
A process for formulating a granulation composition comprising: treating a polymeric material with an alcohol which is substantially free of water to blanket said polymeric material from moisture and air; admixing said alcohol treated polymeric material with a dry ingredient different from said polymeric material, said dry ingredient being less water soluble than said polymeric material; and combining said admixed product with water to bond the polymeric molecules of said polymeric material together and entrap said ingredient in a polymeric matrix.
Claim 2
Dependent Claim
81 words
A process for formulating a granulation composition comprising: treating a polymeric material with an alcohol which is substantially free of water to blanket said polymeric material from moisture and air; admixing said alcohol treated polymeric material with a dry ingredient different from said polymeric material, said dry ingredient being less water soluble than said polymeric material; and combining said admixed product with water to bond the polymeric molecules of said polymeric material together and entrap said ingredient in a polymeric matrix.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein additional dry ingredients are added to said dry ingredient in a sequential manner.
Claim 4
Dependent Claim
16 words
The process of claim 2 further including the step of forming the granulation into a tablet.
Claim 5
Dependent Claim
130 words
A granulation or tablet product wherein a dry ingredient is entrapped in a polymeric material, the dry ingredient being different from the polymeric material and being less water soluble, said product produced by the steps comprising: treating said polymeric material with an alcohol which is substantially free of water to blanket said polymeric material from moisture and air; admixing said alcohol treated polymeric material with said dry ingredient; and combining said admixed product with water to bond the polymeric molecules of said polymeric material together and entrap said ingredient in a polymeric matrix; said dry ingredient being entrapped by said polymeric material in a homogenous manner with the polymer chains and the charge sites of said polymers being separated by said alcohol and water treatment steps prior to said entrapment.
Claim 6
Dependent Claim
130 words
A granulation or tablet product wherein a dry ingredient is entrapped in a polymeric material, the dry ingredient being different from the polymeric material and being less water soluble, said product produced by the steps comprising: treating said polymeric material with an alcohol which is substantially free of water to blanket said polymeric material from moisture and air; admixing said alcohol treated polymeric material with said dry ingredient; and combining said admixed product with water to bond the polymeric molecules of said polymeric material together and entrap said ingredient in a polymeric matrix; said dry ingredient being entrapped by said polymeric material in a homogenous manner with the polymer chains and the charge sites of said polymers being separated by said alcohol and water treatment steps prior to said entrapment.
Claim 7
Dependent Claim
15 words
The product of claim 4 wherein said alcohol contains from one to five carbon atoms.
Claim 8
Dependent Claim
13 words
The product of claim 4 wherein said polymeric material is an acrylic polymer.
Claim 9
Dependent Claim
13 words
The product of claim 4 wherein said polymeric material is a vinyl resin.
Claim 10
Dependent Claim
17 words
The product of claim 4 wherein said polymeric material is an oxide of polyethylene, polypropylene or polyoxymethylene.
Claim 11
Dependent Claim
14 words
The product of claim 4 wherein said dry ingredient is a water treating agent.
Claim 12
Dependent Claim
15 words
The product of claim 9 wherein said water treating agent includes a phosphonic acid compound.
Claim 13
Dependent Claim
16 words
The water treating composition of claim 9 wherein said water treating agent includes a molybdate compound.
Claim 14
Dependent Claim
14 words
The product of claim 9 wherein said water treating agent includes a benzotriazole compound.
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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) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |