Patents by Inventor Hideki Umehara
Hideki Umehara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11929481Abstract: A method for manufacturing a rechargeable battery includes forming a mixture layer and an insulating layer on an electrode substrate having an edge extending in a specified direction so that an exposed portion where the electrode substrate is exposed extends between the edge and the insulating layer; pressing the mixture layer; and stretching an extension portion, located between the edge and the mixture layer, and the insulating layer in the specified direction. The stretching includes applying a stress greater than or equal to yield stress of the electrode substrate or greater than or equal to 0.2% proof stress of the electrode substrate and less than tensile strength of the electrode substrate to the extension portion, and applying a stress greater than or equal to yield stress of the insulating layer or greater than or equal to 0.2% proof stress of the insulating layer to the insulating layer.Type: GrantFiled: November 30, 2022Date of Patent: March 12, 2024Assignees: PRIMEARTH EV ENERGY CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, PRIME PLANET ENERGY & SOLUTIONS, INC.Inventors: Masakazu Umehara, Naomichi Ishikawa, Naoto Ooshiro, Yuuki Kudou, Hideki Hayashi, Hiroki Yamada, Naoya Kishimoto
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Patent number: 6060606Abstract: An optical recording medium having at least a recording layer and a reflective layer on a substrates, the said recording layer contains a dipyrromethene metal chelate compound obtained from a dipyrromethene compound represented by the general formula (1) and a metal ion: ##STR1## wherein R.sup.1 to R.sup.7 are defined in the specification.Type: GrantFiled: April 14, 1999Date of Patent: May 9, 2000Assignees: Mitsui Chemicals, Inc., Yamamoto Chemicals, Inc.Inventors: Tsutami Misawa, Kenichi Sugimoto, Taizo Nishimoto, Hisashi Tsukahara, Takeshi Tsuda, Keisuke Takuma, Hideki Umehara
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Patent number: 5948593Abstract: An optical recording medium having at least a recording layer and a reflective layer on a substrate. The recording layer contains a dipyrromethene metal chelate compound obtained from a dipyrromethene compound represented by the general formula (1) and a metal ion: ##STR1## wherein R.sup.1 to R.sup.7 are defined in the specification.Type: GrantFiled: July 22, 1997Date of Patent: September 7, 1999Assignees: Mitsui Chemicals, Inc., Yamamoto Chemicals, Inc.Inventors: Tsutami Misawa, Kenichi Sugimoto, Taizo Nishimoto, Hisashi Tsukahara, Takeshi Tsuda, Keisuke Takuma, Hideki Umehara
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Patent number: 5876820Abstract: An optical information recording medium is here disclosed which comprises a transparent substrate, a recording layer comprising an organic dyestuff on which information can be written by a laser beam, a reflective layer and a protective layer formed in this order on the substrate, the aforesaid optical information recording medium being characterized by containing a pit.multidot.edge control agent for the formation of recording pits, particularly a dyestuff thermal decomposition accelerator in the recording layer. By the addition of the pit.multidot.edge control agent, deviation properties and jitter properties can be remarkably improved, whereby a CD-R medium having a low error rate and good recording properties can be provided. In consequence, stable compatibility with a commercial CD player can be secured.Type: GrantFiled: November 9, 1995Date of Patent: March 2, 1999Assignees: Mitsui Chemicals, Inc., Yamamoto Chemicals, IncorporatedInventors: Tadashi Koike, Hideki Umehara, Yuji Inatomi, Takeshi Tsuda, Sumio Hirose
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Patent number: 5855979Abstract: An optical recording medium comprising a recording layer, a light interference layer, a reflective layer and a protective layer that are laminated on a substrate, characterized in that said recording layer and said light interference layer comprise at least one organic dye, and that a light absorbent and/or a thermal decomposition promoter are/is added to said light interference layer, wherein the optical recording medium has compatibility that allows good recording and/or reproduction by using lasers of different two wavelength ranges and has good recording properties.Type: GrantFiled: August 4, 1997Date of Patent: January 5, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Hideki Umehara, Jun Tokuhiro, Yuji Inatomi, Tomoyoshi Sasakawa, Tsutami Misawa, Kenichi Sugimoto, Taizo Nishimoto, Takeshi Tsuda
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Patent number: 5750229Abstract: A phthalocyanine represented by the formula (1) ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently an alkyl group substituted by 0 to 5 halogen atoms and having 1 to 20 carbon atoms, an alkenyl group substituted by 0 to 5 halogen atoms and having 2 to 20 carbon atoms or an alkynyl group substituted by 0 to 5 halogen atoms and having 2 to 20 carbon atoms, and at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is substituted by the halogen atom; X is a halogen atom; each of k, l, m and n is independently a value of from 0 to 3; each of o, p, q and r is independently a value of 0, 1 or 2, and all of them are not 0 simultaneously; each sum of k and o, l and p, m and q, and n and r is independently in the range of from 0 to 4; Met is two hydrogen atoms, a di, monosubstituted tri, disubstituted ter metal atom or an oxymetal atom. The above phthalocyanins can be used to provide optical recording medium.Type: GrantFiled: January 6, 1997Date of Patent: May 12, 1998Assignees: Mitsui Toatsu Chemicals, Inc., Yamamoto Chemicals, Inc.Inventors: Takahisa Oguchi, Hideki Umehara, Kenichi Sugimoto, Ryu Oi, Hisato Itoh
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Patent number: 5696758Abstract: Provided is an optical recording medium in which per-pits in a ROM area have a depth of 250 nm or more and 350 nm or less; pre-grooves between the pre-pits have a depth of 30 nm or more and 170 nm or less; wobbling tracks have an amplitude of 25 nm or more and 110 nm or less; the product of the depth of the pre-grooves between the pits and the wobble amplitude of the track is 3100 or more; and pre-grooves in a RAM area have a depth of 130 nm or more and 250 nm or less. The optical recording medium is a hybrid disk having such good signal characteristics as satisfying the Orange Book standards.Type: GrantFiled: August 14, 1996Date of Patent: December 9, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Masatoshi Yanagimachi, Sumio Hirose, Yoshiteru Taniguchi, Hideki Umehara
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Patent number: 5672462Abstract: The present invention relates to an optical recording medium having a recording layer, a reflective layer and a protective layer on a substrate, wherein a quinophthalone compound represented by the following formula (1) is contained in the above recording layer. The use of the quinophthalone compound or a mixture of the quinophthalone compound and a photoabsorbing compound having an absorption maximum in a wavelength falling in a range of 550 to 900 nm in the recording layer makes it possible to provide an interchangeable optical recording medium not only capable of recording and reproducing with a laser having a wavelength falling in a range of 480 to 600 nm, but is also capable of recording and reproducing with red lasers having wavelengths of 630 nm and 680 nm and a near infrared laser having a wavelength of 780 nm.Type: GrantFiled: June 10, 1996Date of Patent: September 30, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Keisuke Takuma, Tsutami Misawa, Kenichi Sugimoto, Taizo Nishimoto, Takeshi Tsuda, Hideki Umehara
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Patent number: 5658707Abstract: An optical recording medium has a recording layer, a reflective layer and a protective layer, all of which are arranged on a substrate. The recording layer contains a porphyrin compound represented by the following formula (1): ##STR1## wherein R.sub.1 to R.sub.8 independently represent a hydrogen atom, an alkyl group, an alkoxy group, an alkylcarbonyl group, an alkoxycarbonyl group, an alkylthio group or a halogen atom, R.sub.9 to R.sub.12 independently represent a hydrogen atom or an alkyl group, and X.sup.- represents an anion.Type: GrantFiled: October 13, 1995Date of Patent: August 19, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Keisuke Takuma, Tsutami Misawa, Masatoshi Yanagimachi, Hideki Umehara, Yoshiteru Taniguchi, Sumio Hirose
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Patent number: 5646273Abstract: A phthalocyanine represented by the formula (1) ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently an alkyl group substituted by 0 to 5 halogen atoms and having 1 to 20 carbon atoms, an alkenyl group substituted by 0 to 5 halogen atoms and having 2 to 20 carbon atoms or an alkynyl group substituted by 0 to 5 halogen atoms and having 2 to 20 carbon atoms, and at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.Type: GrantFiled: September 20, 1995Date of Patent: July 8, 1997Assignees: Mitsui Toatsu Chemicals, Inc., Yamamoto Chemicals, Inc.Inventors: Takahisa Oguchi, Hideki Umehara, Kenichi Sugimoto, Ryu Oi, Hisato Itoh
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Patent number: 5633106Abstract: There is provided with an optical recording medium comprising at least a dye-containing recording layer and a reflective layer laminated on a transparent substrate in this order which has a reflectance of 65% or higher, measured through the substrate, to a light beam having a selected wavelength (.lambda.1) of from 770 to 830 nm and has a reflectance of 15% or higher to a light beam having a selected wavelength (.lambda.2) of from 630 to 690 nm and which is recordable and reproducible with a laser beam having the wavelength of .lambda.1 and being reproducible with a laser beam having the wavelength of .lambda.2. In addition, the recording layer has a dye A having the absorption maximum at the wavelength shorter than 630 nm mixed with a dye B having the absorption maximum at the wavelength of from 630 to 900 nm. Alternatively, an interference layer is provided along with the recording and reflective layers.Type: GrantFiled: April 4, 1995Date of Patent: May 27, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Shin Aihara, Hideki Umehara, Masatoshi Yanagimachi, Yoshiteru Taniguchi, Sumio Hirose
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Patent number: 5492744Abstract: An optical information recording medium is here disclosed which comprises a transparent substrate, a recording layer comprising an organic dyestuff on which information can be written by a laser beam, a reflective layer and a protective layer formed in this order on the substrate, the aforesaid optical information recording medium being characterized by containing a pit.edge control agent for the formation of recording pits, particularly a dyestuff thermal decomposition accelerator in the recording layer. By the addition of the pit.edge control agent, deviation properties and jitter properties can be remarkably improved, whereby a CD-R medium having a low error rate and good recording properties can be provided. In consequence, stable compatibility with a commercial CD player can be secured.Type: GrantFiled: December 1, 1993Date of Patent: February 20, 1996Assignees: Mitsui Toatsu Chemicals Incorporated, Yamamoto Chemicals, IncorporatedInventors: Tadashi Koike, Hideki Umehara, Yuji Inatomi, Takeshi Tsuda, Sumio Hirose
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Patent number: 5446142Abstract: The present invention provides a light-absorbing compound represented by the formula (I):Dye-(OR.sup.1)(OR.sup.2)(OR.sup.3) . . . (OR.sup.n) (I)wherein Dye is a light-absorbing compound residue having at least one aromatic ring; OR.sup.1 to OR.sup.n are substituents on the aromatic ring, and are independently (a) substituted or unsubstituted saturated hydrocarbonoxy groups having 1 to 20 carbon atoms, or (b) substituted or unsubstituted unsaturated hydrocarbonoxy groups having 2 to 20 carbon atoms, and at least one of OR.sup.1 to OR.sup.n is an unsaturated hydrocarbonoxy group; and n is a value of from 1 to 10. The present invention also provides an optical recording medium containing the above-mentioned light-absorbing compound in a recording layer.Type: GrantFiled: June 11, 1993Date of Patent: August 29, 1995Assignees: Mitsui Toatsu Chemicals, Inc., Yamamoto Chemicals, Inc.Inventors: Hisato Itoh, Takahisa Oguchi, Kenichi Sugimoto, Ryu Oi, Hideki Umehara, Shin Aihara
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Patent number: 5188898Abstract: Ferromagnetic metal particles the surface layer of which comprises laminatedly covered films of a ferrite compound having a spinel structure of at least one metal selected from cobalt, zinc, manganese, aluminum, chromium, nickel and copper and iron and a preparation process thereof.The particles can be used as a high density magnetic recording medium.Type: GrantFiled: April 4, 1991Date of Patent: February 23, 1993Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Kimiteru Tagawa, Seiichi Takahashi, Noritoshi Utsuno, Hideki Umehara, Fujio Hayashi, Shigeo Kiba, Satoru Suda
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Patent number: RE38979Abstract: An optical information recording medium is here disclosed which comprises a transparent substrate, a recording layer comprising an organic dyestuff on which information can be written by a laser beam, a reflective layer and a protective layer formed in this order on the substrate, the aforesaid optical information recording medium being characterized by containing a pit-edge control agent for the formation of recording pits, particularly a dyestuff thermal decomposition accelerator in the recording layer. By the addition of the pit-edge control agent, deviation properties and jitter properties can be remarkably improved, whereby a CD-R medium having a low error rate and good recording properties can be provided. In consequence, stable compatibility with a commercial CD player can be secured.Type: GrantFiled: March 1, 2001Date of Patent: February 14, 2006Assignee: Mitsui Chemicals, Inc.Inventors: Tadashi Koike, Hideki Umehara, Yuji Inatomi, Takeshi Tsuda, Sumio Hirose