1
Hiroshi Hayashi, Koichi Matono, Satoshi Asahi, Michitake Uoi: Process for the production of polyethylene compositions. Idemitsu Kosan Company, Frishauf Holtz Goodman & Woodward, January 14, 1986: US04564647 (59 worldwide citation)

A process for producing a polyethylene composition which comprises polymerizing ethylene in the presence of a catalyst comprising (A) a contact treatment product of (a) a high activity catalyst component and (b) a filler, and (B) an organoaluminum compound.


2
Junji Ohtani, Junji Machida, Kazuo Ota, Satoshi Asahi, Hiroshi Hayashi, Kouichi Matono: Polyolefinic resin-coated uneven electrophotographic carrier particles. Minolta Camera Kabushiki Kaisha, Idemitsu Kosan Company, Burns Doane Swecker & Mathis, March 3, 1992: US05093201 (27 worldwide citation)

The present invention provides a polyolefinic resin-coated carrier having a rough surface and containing a core material in a quantity of 90 or more % by weight. Said resin-coated layer may contain fine particles having a charge-controlling function and/or electrically conductive fine particles as a ...


3
Keiichi Shimasaki, Hiroshi Kanayama, Hiroshi Kanemitsu, Makoto Shibata, Satoshi Asahi, Akira Takenaka: Dual lip seal device. Taiho Kogyo, Sughrue Mion Zinn Macpeak & Seas, April 18, 1989: US04822059 (25 worldwide citation)

A lip seal device for sealing the gap between a housing and a rotary shaft comprises a case surrounding the rotary shaft, a plurality of lip seals fitted inside the case and including at least two lip seals, support means for holding the lip seals on the outer circumferential portions thereof and se ...


4
Keiichi Shimasaki, Hiroshi Kanayama, Hiroshi Kanemitsu, Makoto Shibata, Satoshi Asahi, Akira Takenaka: Lip seal device. Taiho Kogyo, Sughrue Mion Zinn Macpeak & Seas, January 28, 1992: US05083802 (24 worldwide citation)

A lip seal device for sealing the gap between a housing and a rotary shaft comprises a case surrounding the rotary shaft, a lip seal attached inside the case a, support for holding the lip seal on the outer circumferential portion thereof and a seal located on the outside circumferential surface of ...


5
Keiichi Shimasaki, Hiroshi Kanayama, Hiroshi Kanemitsu, Makoto Shibata, Satoshi Asahi, Akira Takenaka: Lip seal device having an annular groove. Taiho Kogyo, Sughrue Mion Zinn Macpeak & Seas, May 30, 1989: US04834397 (20 worldwide citation)

A lip seal device for sealing the gap between a housing and a rotary shaft comprises a case surrounding the rotary shaft, a lip seal attached inside the case, support means for holding the lip seal on the other circumferential portion thereof and seal means located on the outside circumferential sur ...


6
Masami Watanabe, Shuji Machida, Satoshi Asahi: Aryl styrene-based copolymer. Idemitsu Kosan Company, Frishauf Holtz Goodman & Woodward, April 4, 1995: US05403908 (11 worldwide citation)

The present invention provides an aryl styrene-based polymer of a degree of polymerization of at least 5 having recurring units represented by the general formula ##STR1## in the formula, R.sup.1 to R.sup.5 each denote a hydrogen atom, halogen atom or substituent group containing at least either one ...


7
Junji Ohtani, Junji Machida, Kazuo Ota, Satoshi Asahi, Hiroshi Hayashi, Kouichi Matono: Polyolefinic resin-coated uneven carrier. Minolta Camera Kabushiki Kaisha, Idemitsu Kosan Company, Burns Doane Swecker & Mathis, December 21, 1993: US05272037 (10 worldwide citation)

The present invention provides a polyolefinic resin-coated carrier having a rough surface and containing a core material in a quantity of 90 or more % by weight. Said resin-coated layer may contain fine particles having a charge-controlling function and/or electrically conductive fine particles as a ...


8
Hiroshi Maezawa, Junichi Matsumoto, Hideki Aiura, Satoshi Asahi: Process for producing a norbornene polymer. Idemitsu Kosan Company, Frishauf Holtz Goodman & Woodward, September 6, 1994: US05344900 (10 worldwide citation)

A process for producing a norbornene polymer consisting essentially of a repeating unit of the formula (I) ##STR1## wherein R.sup.1 to R.sup.12 are the same or different and are hydrogen, C.sub.1 -C.sub.20 hydrocarbon, or a group having a halogen, oxygen or nitrogen, R.sup.5 and R.sup.7 may combine ...


9
Akio Kimura, Satoshi Asahi: Process for polymerization of ethylene. Idemitsu Kosan, Frishauf Holtz Goodman & Woodward, March 10, 1981: US04255544 (10 worldwide citation)

Ethylene is polymerized in the presence of a catalyst comprising: (A) the reaction product of a magnesium compound and titanium halide and (B) an organic aluminum compound wherein Component A is prepared by reacting magnesium dialkoxide with a halogen-containing silicon compound and an alcohol to pr ...


10
Junji Machida, Junji Ohtani, Kazuo Ota, Satoshi Asahi, Hiroshi Hayashi, Kouichi Matono: Fine particles composing developer for electrophotography. Minolta Camera Kabushiki Kaisha, Idemitsu Kosan Company, Burns Doane Swecker & Mathis, November 24, 1992: US05166027 (6 worldwide citation)

The present invention provides fine particles comprising core particles and polyolefinic resin layers for composing an electrostatic latent image developer, characterized in that the polyolefinic resin layers are formed by polymerizing olefinic monomers on surfaces of the core particles.