Patents by Inventor Minoru Suda
Minoru Suda 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: 5701339Abstract: Registered on the voice dial card, which is not shown in the drawings, are a number for accessing the dial-less calling service and a user identification number. Public telephone 1 is equipped with reader 1a that reads the card. When the card is inserted in direction p, the aforementioned access number and user identification number are read by the reader. These numbers are automatically originated from public telephone 1, and switch 3 connects the line to controller 5 according to the access number. Controller 5 judges whether the customer is eligible to receive the dial-less calling service according to the user identification number, and if it judges that the customer is eligible to receive the service, it requests the caller to speak the destination name. In the following steps, the well known voice dialing is performed. According to this invention, a user can access voice dialing service from public telephones as well as non-public telephones.Type: GrantFiled: October 12, 1995Date of Patent: December 23, 1997Assignee: Kokusai Denshin Denwa Kabushiki KaishaInventor: Minoru Suda
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Power transistor device having collector voltage clamped to stable level over wide temperature range
Patent number: 5502338Abstract: A power transistor device is provided which has a function of clamping the collector voltage to a stable level for a wide range of temperature variations. In the power transistor device, a plurality of pn junctions are formed to fabricate Zener diodes in the polycrystalline silicon film in the form of rings. The ring configuration of the Zener diodes eliminates an end at the pn junction and prevents the junction surface from being exposed, making it possible to use as a stable Zener voltage the dielectric strength characteristic of the pn junction having a very small temperature coefficient.Type: GrantFiled: November 18, 1994Date of Patent: March 26, 1996Assignee: Hitachi, Ltd.Inventors: Minoru Suda, Masatoshi Nakasu, Tetsuo Iijima -
Patent number: 5397914Abstract: In a transistor where collector is connected to an inductive load and switching current flows, a Zener diode comprising structure of plural pn-junctions constituted in series form to a polysilicon is provided between collector and base. Further MOSFET is switch-controlled by control voltage formed based on Zener current flowing through the Zener diode, and current path in parallel form to the Zener diode is constituted. Since temperature characteristic coefficient of a Zener diode formed in a polysilicon film is very small, the reverse voltage generated in the inductive load can be set to stable voltage in spite of the temperature variation. Further the MOSFET is provided in parallel form, thereby relatively large ON-resistance value of the Zener diode can be decreased.Type: GrantFiled: April 27, 1993Date of Patent: March 14, 1995Assignee: Hitachi Ltd.Inventors: Minoru Suda, Masatoshi Nakasu, Tetsuo Iijima
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Patent number: 4701539Abstract: Processes for producing a (1.alpha., 4.alpha., 5.alpha.)-6,6-dimethyl-4-halo-substituted methyl-3-oxabicyclo[3.1.0]hexan-2-one and its novel intermediates from known and inexpensive starting materials are described and exemplified.Type: GrantFiled: July 24, 1986Date of Patent: October 20, 1987Assignee: FMC CorporationInventors: Kiyoshi Kondo, Toshiyuki Takashima, Minoru Suda
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Patent number: 4473701Abstract: Processes for producing a (1.alpha., 4.alpha., 5.alpha.)-6,6-dimethyl-4-halo-substituted-methyl-3-oxabicyclo[3.1.0]hexan- 2-one and its novel intermediates from known and inexpensive starting materials are described and exemplified.Type: GrantFiled: January 22, 1982Date of Patent: September 25, 1984Assignee: FMC CorporationInventors: Kiyoshi Kondo, Toshiyuki Takashima, Minoru Suda
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Patent number: 4431659Abstract: Compounds of the general formula ##STR1## their method of preparation, and their use to control nematodes in agricultural crops are disclosed and exemplified.Type: GrantFiled: September 29, 1982Date of Patent: February 14, 1984Assignee: FMC CorporationInventors: Kunikazu Sakai, Minoru Suda, Kiyoshi Kondo
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Patent number: 4387233Abstract: Novel intermediates for production of insecticidal cis-3-(2,2-disubstituted-ethenyl)-2,2-dimethylcyclopropanecarboxylates, processes for preparing the intermediates, and processes for preparing the final product insecticides via a novel bicyclic lactone intermediate are described and exemplified.Type: GrantFiled: March 1, 1982Date of Patent: June 7, 1983Assignee: FMC CorporationInventors: Kiyoshi Kondo, Toshiyuji Takashima, Minoru Suda
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Patent number: 4344884Abstract: Novel intermediates for production of insecticidal cis-3-(2,2-disubstituted-ethenyl)-2,2-dimethylcyclopropanecarboxylates, processes for preparing the intermediates, and processes for preparing the final product insecticides via a novel bicyclic lactone intermediate are described and exemplified.Type: GrantFiled: June 30, 1980Date of Patent: August 17, 1982Assignee: FMC CorporationInventors: Kiyoshi Kondo, Toshiyuki Takashima, Minoru Suda
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Patent number: 4342694Abstract: Processes for producing a (1.alpha., 4.alpha., 5.alpha.)-6,6-dimethyl-4-halo-substituted-methyl-3-oxabicyclo[3.1.0]hexan- 2-one and its novel intermediates from known and inexpensive starting materials are described and exemplified. The halomethyl bicyclic lactone is a useful intermediate for the preparation of insecticidal cis-3-(2,2-dihaloethenyl)-2,2-dimethylcyclopropanecarboxylates or cis-3-(2-halo-2-trihalomethylethenyl)-2,2-dimethylcyclopropanecarboxylates .Type: GrantFiled: June 23, 1980Date of Patent: August 3, 1982Assignee: FMC CorporationInventors: Kiyoshi Kondo, Toshiyuki Takashima, Minoru Suda
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Patent number: 4268442Abstract: There are disclosed processes for preparing an aromatic acetic acid by the reaction of an aromatic aldehyde with a combination of a trihalomethane and an alkanethiol, and by the reaction of an alcohol derivative (2,2,2-trihalo-1-arylethanol) with an alkanethiol, in the presence of a base in a mixed medium of water and an aprotic polar solvent.Type: GrantFiled: November 13, 1979Date of Patent: May 19, 1981Assignee: Sagami Chemical Research CenterInventors: Kiyosi Kondo, Tamotsu Fujimoto, Minoru Suda, Daiei Tunemoto
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Patent number: 4245108Abstract: A process for preparing a 2-thio-2-substituted-alkanoic acid derivative represented by the formula (I) ##STR1## wherein A, R, R.sup.3 and R.sup.4 are as defined hereinafter, which comprises condensing an aldehyde compound of the formula (V)A--CHO (V)wherein A is as defined hereinafter, with a haloform of the formula CHX.sub.3 wherein X is as defined hereinafter and a mercaptan compound of the formula (IV)R.sup.3 SH (IV)wherein R.sup.3 is as defined hereinafter, in the presence of a base to produce a 2-(arylthio or alkylthio)-2-substituted-acetic acid of the formula (III) ##STR2## wherein A and R.sup.3 are as defined hereinafter, and reacting the resulting 2-(arylthio or alkylthio)-2-substituted-acetic acid of the formula (III) with an alkylating agent represented by the formula (II)RZ (II)wherein R and Z are as defined hereinafter, in the presence of at least 2 mols of a base per mol of the 2-(arylthio or alkylthio)-2-substituted-acetic acid, to form the compound of the formula (I) wherein R.sup.Type: GrantFiled: August 17, 1978Date of Patent: January 13, 1981Assignee: Sagami Chemical Research CenterInventors: Kiyosi Kondo, Daiei Tunemoto, Akira Negishi, Minoru Suda
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Patent number: 4238396Abstract: 5-Cyano-1-hydrocarbylpyrrole-2-acetic acid is converted to 5-acyl-1-hydrocarbylpyrrole-2-acetic acid by reaction with a Grignard reagent followed by hydrolysis. The cyano compound, novel per se, is produced by reacting 1-hydrocarbyl-2-(2',2',2'-trihalo-1'-hydroxyethyl)pyrrole with a cyanating reagent under basic conditions. The latter pyrrole is in turn formed by reacting 1-hydrocarbylpyrrole with trihaloacetaldehyde such as chloral, preferably in the presence of added organic acid catalyst.Type: GrantFiled: November 27, 1978Date of Patent: December 9, 1980Assignee: Sagami Chemical Research CenterInventors: Kiyosi Kondo, Minoru Suda, Daiei Tunemoto
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Patent number: 4237058Abstract: Novel intermediates for production of insecticidal cis-3-(2,2-disubstituted-ethenyl)-2,2-dimethylcyclopropanecarboxylates, processes for preparing the intermediates, and processes for preparing the final product insecticides via a novel bicyclic lactone intermediate are described and exemplified.Type: GrantFiled: November 1, 1979Date of Patent: December 2, 1980Assignee: FMC CorporationInventors: Kiyoshi Kondo, Toshiyuki Takashima, Minoru Suda
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Patent number: 4235780Abstract: Processes for producing a (1.alpha., 4.alpha., 5.alpha.)-6,6-dimethyl-4-halo-substituted-methyl-3-oxabicyclo[3.1.0]hexan- 2-one and its novel intermediates from known and inexpensive starting materials are described and exemplified.Type: GrantFiled: November 1, 1979Date of Patent: November 25, 1980Assignee: FMC CorporationInventors: Kiyoshi Kondo, Toshiyuki Takashima, Minoru Suda
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Patent number: 4229593Abstract: Process to prepare 3-(2,2-dichloroethenyl)-2,2-di-methylcyclopropanecarboxylic acid enriched with the (+)-cis isomer.Type: GrantFiled: May 29, 1979Date of Patent: October 21, 1980Assignee: FMC CorporationInventors: Kiyoshi Kondo, Minoru Suda
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Patent number: 4043767Abstract: A centerless grinding machine of tangential feed type including a work holder which is divided into a workrest for holding a workpiece as well as for loading and unloading same to and from grinding position, and a workrest holder for supporting the workrest during grinding operation as well as for giving depth of cut to the workpiece. The workrest and the workrest holder are reciprocatively moved by their independent driving mechanisms and adapted to be combined for giving depth of cut to the workpiece held in the workrest during grinding operation. Immediately upon completion of the grinding operation, the workrest is separated from the workrest holder and returned upwardly for unloading the workpiece from the grinding position.Type: GrantFiled: August 16, 1976Date of Patent: August 23, 1977Inventor: Minoru Suda
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Patent number: 3940187Abstract: An antifriction bearing bush which includes a thin cylindrical outer sleeve, a cylindrical ball retainer, and balls. The outer sleeve has an end wall and at least three equidistant axially extending convex portions formed on the inner surface thereof except for one end. The cylindrical ball retainer fits within the thin cylindrical outer sleeve and has at least three axially oblong grooves on the outside thereof. The oblong grooves are composed of two straight sections and two curved sections. One of the straight sections and an adjacent portion of each curved section is cut completely through the ball retainer. The straight section has extended straight sectional grooves reaching the ends of the cylindrical ball retainer. The depth of the straight sectional grooves are complementary to the convex portions on the outer sleeve.Type: GrantFiled: July 18, 1974Date of Patent: February 24, 1976Inventor: Minoru Suda