High-density polyethylene mixed resin particles, composite resin particles, foamed particles and foamed molded body
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 27, 2018
Grant Date -
Nov 24, 2016
app pub date -
Mar 5, 2015
filing date -
Mar 28, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
High-density polyethylene mixed resin particles used as seed particles during seed polymerization, wherein said seed particles contain a mixed resin of 100 parts by weight of high-density polyethylene and 20 to 100 parts by weight of an ethylene copolymer; said high-density polyethylene has a density of 935 to 960 kg/m3 and a softening temperature of 115 to 130° C.; said ethylene copolymer is a copolymer of an ester-based monomer selected from an acrylic acid alkyl ester and an aliphatic saturated monocarboxylic acid vinyl, and etylene, contains 1 to 20% by weight of an ester-based monomer-derived component, and has a softening temperature of 75 to 110° C.; said acrylic acid alkyl ester is selected from methyl acrylate and ethyl acrylate; and said aliphatic saturated monocarboxylic acid vinyl is selected from vinyl acetate and vinyl propionate.
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 | |
---|---|---|
SEKISUI PLASTICS CO LTD | OSAKA-SHI OSAKA 530-0047 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Gondoh, Yuichi | Nara, JP | 8 | 0 |
# of filed Patents : 8 Total Citations : 0 | |||
Oowaki, Hiroki | Shiga, JP | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 |
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- 7 Age
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 27, 2025 |
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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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Nov 02, 2015 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Oct 04, 2015 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Oct 04, 2015 |
Oct 04, 2015 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
May 15, 2015 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Dec 13, 2013 | AS | ASSIGNMENT | free format text: LIEN;ASSIGNOR:COLLABO INNOVATIONS, INC.;REEL/FRAME:031997/0445 Owner name: PANASONIC CORPORATION, JAPAN Effective Date: Dec 13, 2013 |
Dec 12, 2013 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PANASONIC CORPORATION;REEL/FRAME:033021/0806 Owner name: COLLABO INNOVATIONS, INC., CANADA Effective Date: Dec 12, 2013 |
Dec 06, 2011 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Oct 04, 2011 | I | Issuance | |
Jul 22, 2010 | P | Published | |
Nov 10, 2009 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAKAHASHI, TOSHIHIKO;AIDA, KAZUTOSHI;IMURA, MASAHARU;REEL/FRAME:023948/0270 Owner name: PANASONIC CORPORATION, JAPAN Effective Date: Nov 10, 2009 |
May 16, 2008 | F | Filing | |
May 23, 2007 | PD | Priority Date |

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