Porous resin particles, method of manufacturing porous resin particles, and use of porous resin particles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 14, 2017
Issued Date -
N/A
app pub date -
Mar 29, 2013
filing date -
Sep 26, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed are porous resin particles which contain a polymer of a monomer mixture containing, as monomers, at least a monofunctional (meth)acrylic acid ester and a crosslinking monomer. The monofunctional (meth)acrylic acid ester accounts for 1 wt % to 50 wt % of the monomer mixture, and the crosslinking monomer accounts for 50 wt % to 99 wt % of the monomer mixture. The porous resin particles have a specific surface area of 190 m2/g to 300 m2/g and a bulk specific gravity of 0.25 g/mL to 0.45 g/mL.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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SEKISUI PLASTICS CO LTD | OSAKA-SHI OSAKA 530-0047 |
International Classification(s)
- C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
- A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
- C08F:MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONL....
- C09D:COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQ....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- B01J:CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, CO....
- A61Q:USE OF COSMETICS OR SIMILAR TOILET PREPARATIONS

- 2013 Application Filing Year
- C08J Class
- 1321 Applications Filed
- 1140 Patents Issued To-Date
- 86.30 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hama, Yukio | Koka, JP | 1 | 4 |
# of filed Patents : 1 Total Citations : 4 | |||
Hiroi, Junko | Koka, JP | 2 | 21 |
# of filed Patents : 2 Total Citations : 21 | |||
Okamoto, Koichiro | Koka, JP | 21 | 142 |
# of filed Patents : 21 Total Citations : 142 |
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Patent Citation Ranking
- 1 Citation Count
- C08J Class
- 34.68 % this patent is cited more than
- 8 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 14, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 14, 2029 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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 |
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Legal Events
Date | Code | Event | Description |
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Apr 28, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Nov 14, 2017 | I | Issuance | |
Oct 25, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jan 29, 2015 | P | Published | |
Aug 29, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HAMA, YUKIO;OKAMOTO, KOICHIRO;HIROI, JUNKO;REEL/FRAME:033658/0592 Owner name: SEKISUI PLASTICS CO., LTD., JAPAN Effective Date: Aug 29, 2014 |
Mar 29, 2013 | F | Filing | |
Sep 26, 2012 | PD | Priority Date |

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