Hydrogels containing substances
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 20, 2004
Grant Date -
N/A
app pub date -
Aug 29, 2000
filing date -
Nov 5, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A blend of one or more crosslinked polymers or copolymers prepared from an olefinically unsaturated polymerizable carboxylic or anhydride monomer and at least one high molecular weight essentially linear polymer prepared from an olefinically unsaturated polymerizable carboxylic acid monomer. The blend is neutralized to typically a low pH, and generally contains a noncovalent, e.g. ionic, crosslinking agent, and a cure rate modifier. The hydrogel blend is capable of containing a large amount of water, has good tack, good adhesion, and can be utilized as an application vehicle having a backing thereon as well as containing various substances such as personal care compounds, pharmaceuticals, active ingredients, and the like. Conversely, the hydrogel blend can be dried and subsequently wetted without substantial loss of properties.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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NOVEON INC | 9911 BRECKSVILLE ROAD CLEVELAND OH 44141-3247 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Frate, Dean M | Cleveland, OH | 5 | 183 |
# of filed Patents : 5 Total Citations : 183 | |||
Guo, Jian-Hwa | Hudson, OH | 17 | 1024 |
# of filed Patents : 17 Total Citations : 1024 |
Cited Art Landscape
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Patent Citation Ranking
- 61 Citation Count
- C08L Class
- 98.82 % this patent is cited more than
- 21 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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Jul 25, 2017 | I | Issuance | |
Jul 03, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 03, 2015 | P | Published | |
Aug 12, 2015 | F | Filing |

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