Patents by Inventor Hiroshi Yasuda

Hiroshi Yasuda 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).

  • Publication number: 20010028043
    Abstract: An electron beam exposure apparatus for exposing a wafer of the present invention includes: a multi-axis electron lens operable to converge a plurality of electron beams independently of each other; and an illumination switching unit operable to switch whether or not electron beams are to be incident on the wafer, for each electron beam independently of other electron beams.
    Type: Application
    Filed: April 4, 2001
    Publication date: October 11, 2001
    Inventors: Shinichi Hamaguchi, Takeshi Haraguchi, Hiroshi Yasuda
  • Publication number: 20010028038
    Abstract: An electron beam exposure apparatus for exposing a wafer with a plurality of electron beams, includes: a plurality of electron guns operable to generate the electron beams; a voltage controller, electrically connected to the electron guns, operable to apply different voltages to the electron guns; and a multi-axis electron lens operable to converge the electron beams independently of each other.
    Type: Application
    Filed: April 4, 2001
    Publication date: October 11, 2001
    Inventors: Shinichi Hamaguchi, Takeshi Haraguchi, Hiroshi Yasuda
  • Publication number: 20010028046
    Abstract: An electron beam exposure apparatus for exposing a wafer includes: a multi-axis electron lens operable to converge a plurality of electron beams independently of each other; and a lens-intensity adjuster including a substrate provided to be substantially parallel to the multi-axis electron lens, and a lens-intensity adjusting unit operable to adjust the lens intensity of the multi-axis electron lens applied to the electron beams passing through the lens openings, respectively.
    Type: Application
    Filed: April 4, 2001
    Publication date: October 11, 2001
    Inventors: Shinichi Hamaguchi, Takeshi Haraguchi, Hiroshi Yasuda
  • Patent number: 6300357
    Abstract: A triazole compound having the formula: wherein Ar1 represents a phenyl group which may be substituted, Ar2 represents a heterocyclic group which may be substituted, R0 represents a hydrogen atom or a lower alkyl; R1 represents a lower alkyl; R2 to R5 each represent a hydrogen atom or an unsubstituted or halo substituted alkyl; n represents 0 to 2; p represents 0 or 1; q, r and s each represent 0 to 2; A represents a 4- to 7-membered carbon ring or a 4- to 7-membered heterocyclic group. The compound of the present invention exhibits an excellent antifungal activity.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: October 9, 2001
    Assignee: Sankyo Company, Limited
    Inventors: Sadao Oida, Teruo Tanaka, Yawara Tajima, Toshiyuki Konosu, Atsushi Somada, Takeo Miyaoka, Hiroshi Yasuda
  • Publication number: 20010013581
    Abstract: A method of exposing a wafer to a charged-particle beam by directing to the wafer the charged-particle beam deflected by a deflector includes the steps of arranging a plurality of first marks at different heights, focusing the charged-particle beam on each of the first marks by using a focus coil provided above the deflector, obtaining a focus distance for each of the first marks, obtaining deflection-efficiency-correction coefficients for each of the first marks, and using linear functions of the focus distance for approximating the deflection-efficiency-correction coefficients to obtain the deflection-efficiency-correction coefficients for an arbitrary value of the focus distance. A device for carrying out the method is also set forth.
    Type: Application
    Filed: April 6, 2001
    Publication date: August 16, 2001
    Inventors: Akio Takemoto, Yoshihisa Ooaeh, Tomohiko Abe, Hiroshi Yasuda, Takamasa Satoh, Hideki Nasuno, Hidefumi Yabara, Kenichi Kawakami, Kiichi Sakamoto, Tomohiro Sakazaki, Isamu Seto, Masami Takigawa, Tatsuro Ohkawa
  • Patent number: 6268606
    Abstract: An electrostatic deflector of an electron beam exposure apparatus is disclosed. A cylindrical holding member is made of an insulating material. An electrode including a plurality of electrode members fixedly arranged in spaced relationship to each other and having at least a portion of the surface thereof grown with a metal film is disposed inside the holding member. The electrode members each formed with a metal film on the surface thereof are made of a conductive ceramic having a resistivity selected at least in the range of 0.001 &OHgr;•cm to 1000 &OHgr;•cm.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: July 31, 2001
    Assignee: Advantest Corporation
    Inventors: Tomohiko Abe, Yoshihisa Ooae, Hiroshi Yasuda
  • Patent number: 6262292
    Abstract: The invention relates to (1) a process for producing a cyanobenzaldehyde compound by converting the aminomethyl group in a cyanobenzylamine compound into an aldehyde group using an oxidizing agent without impairing the cyano group, to (2) a process for producing a cyanobenzoyl halide compound by converting the aldehyde group in a cyanobenzaldehyde compound into an acid halide group without impairing the cyano group, and to (3) a process for producing a cyanobenzoic acid compound by reacting a cyanobenzaldehyde compound with a hypohalogenous compound. According to the present invention, cyanophenyl derivatives that are useful as an intermediate of medical preparations, agricultural chemicals, liquid crystals, functional high molecular monomers and the like can be produced efficiently from raw materials that are obtained without difficulty.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: July 17, 2001
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Yasuda, Kimitaka Ohshiro, Kaneo Nozawa, Kohei Morikawa
  • Patent number: 6252344
    Abstract: An electron gun, preferably a four-pole electron gun, used in an electron beam exposure apparatus is formed by: a cathode for emitting an electron beam when supplying a negative and high-accelerated voltage; a first grid provided downstream of the cathode for focusing a crossover image of the electron beam when supplying a voltage which becomes a reverse bias for the cathode, and the cathode and the first grid being arranged at a high voltage side of a high voltage insulator; an anode for collecting the electron beam which passes through the first grid, and being arranged at a low voltage side of the high voltage insulator; and a second grid provided at the high voltage side of the high voltage insulator and between the first grid and the anode, and having an aperture for limiting an amount of the electron beam passing therethrough. A voltage which becomes a forward bias for the cathode is supplied to the second grid, and the crossover image is focused at the aperture of the second grid.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: June 26, 2001
    Assignee: Advantest Corporation
    Inventors: Yoshihisa Ooae, Takamasa Satoh, Akio Yamada, Hiroshi Yasuda
  • Patent number: 6245268
    Abstract: Polymer blend fibers having a phase separation structure are provided. The phase separation structure is a sea-island structure and a diameter D1 on a circle basis of an island phase of the sea-island structure in a transverse cross-section of the fibers is in the range of 0.001 to 0.4 &mgr;m.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: June 12, 2001
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Tetsushi Oka, Seiki Nishihara, Hiroshi Yasuda
  • Patent number: 6242751
    Abstract: A method of exposing a wafer to a charged-particle beam by directing to the wafer the charged-particle beam deflected by a deflector includes the steps of arranging a plurality of first marks at different heights, focusing the charged-particle beam on each of the first marks by using a focus coil provided above the deflector, obtaining a focus distance for each of the first marks, obtaining deflection-efficiency-correction coefficients for each of the first marks, and using linear functions of the focus distance for approximating the deflection-efficiency-correction coefficients to obtain the deflection-efficiency-correction coefficients for an arbitrary value of the focus distance. A device for carrying out the method is also set forth.
    Type: Grant
    Filed: July 15, 1999
    Date of Patent: June 5, 2001
    Assignee: Fujitsu Limited
    Inventors: Akio Takemoto, Yoshihisa Ooaeh, Tomohiko Abe, Hiroshi Yasuda, Takamasa Satoh, Hideki Nasuno, Hidefumi Yabara, Kenichi Kawakami, Kiichi Sakamoto, Tomohiro Sakazaki, Isamu Seto, Masami Takigawa, Tatsuro Ohkawa
  • Patent number: 6218060
    Abstract: The present invention relates to a multicolumn electron-beam lithography system. An object of the present invention is to realize, at low cost, a multicolumn electron-beam lithography system capable of concurrently exposing chips on one wafer. The multicolumn electron-beam lithography system has a plurality of columns (8-1, 8-2, 8-3, 8-4) each includes a main deflector (16), and a sub deflector (14). The main deflector offers a large magnitude of deflection. The sub deflector offers a small magnitude of deflection. The plurality of columns irradiates an electron beam to a sample while deflecting it according to main deflector-related data (62) and sub deflector-related data (61). Herein, the plurality of columns concurrently draws a pattern on one wafer (50). The multicolumn electron-beam lithography system further includes a deviation memory (63) and a correction unit (64). Deviations of the optical axes of the columns measured in advance are stored in the deviation memory.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: April 17, 2001
    Assignee: Advantest Corporation
    Inventors: Hiroshi Yasuda, Hideaki Komami
  • Patent number: 6187945
    Abstract: An industrially advantageous process for producing cyanobenzyl compounds under mild conditions from relatively easily available cyanobenzylamine having a cyano group on the benzene ring or a compound thereof which is ring-substituted with a chlorine atom, a fluorine atom, etc. The process for producing a cyanobenzyl compound includes transforming an aminomethyl group of a cyanobenzylamine compound into a hydroxymethyl group, a halogenomethyl group, or an acyloxymethyl group without causing damage to a cyano group on the benzene ring. The transformation may be carried out by use of nitrosonium ions.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: February 13, 2001
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Yasuda, Masatoshi Murakami
  • Patent number: 6175121
    Abstract: A block mask for making a charged particle beam exposure using block exposure includes a plurality of block mask patterns respectively including repeating patterns, where the block mask patterns are arranged in an order dependent on an exposure sequence, at least one first block mask pattern group made up of arbitrary ones of the block mask patterns which are arranged in a predetermined direction, and at least one second block mask pattern group made up of the arbitrary ones of the block mask patterns which are arranged in a direction opposite to the predetermined direction. The second block mask pattern group is arranged adjacent to the first block mask pattern group.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: January 16, 2001
    Assignee: Fujitsu Limited
    Inventors: Akio Yamada, Hiroshi Yasuda
  • Patent number: 6118129
    Abstract: A method for exposing an exposure pattern on an object by a charged particle beam, including the steps of: shaping a charged particle beam into a plurality of charged particle beam elements in response to first bitmap data indicative of an exposure pattern, such that the plurality of charged particle beam elements are selectively turned off in response to the first bitmap data; focusing the charged particle beam elements upon a surface of an object; and scanning the surface of the object by the charged particle beam elements; the step of shaping including the steps of: expanding pattern data of said exposure pattern into second bitmap data having a resolution of n times (n.gtoreq.2) as large as, and m times (m.gtoreq.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: September 12, 2000
    Assignee: Fujitsu Limited
    Inventors: Yoshihisa Oae, Tomohiko Abe, Soichiro Arai, Shigeru Maruyama, Hiroshi Yasuda, Kenichi Miyazawa, Junichi Kai, Takamasa Satoh, Keiichi Betsui, Hideki Nasuno
  • Patent number: 6090527
    Abstract: In an exposure mask of the present invention, a plurality of opening regions are disposed via crossbeams, each having a size not to be resolved, along peripheral edges of island-like patterns and peninsula-like patterns for shielding transmission of charged particles.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: July 18, 2000
    Assignee: Fujitsu Limited
    Inventors: Satoru Yamazaki, Kiichi Sakamoto, Hiroshi Yasuda, Takayuki Sakakibara, Satoru Sagoh
  • Patent number: 6090802
    Abstract: A 1-methylcarbapenem compound represented by the following formula (I): ##STR1## wherein R.sup.1 represents hydrogen or C.sub.1 -C.sub.4 alkyl; R.sup.2 represents hydrogen or an ester residue; and A represents a group of the formula (A1) ##STR2## wherein n is 0, 1 or 2, P is 0, 1 or 2, R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl and R.sup.4 is a group (Q2) ##STR3## wherein B is phenylene, phenylene(C.sub.1 -C.sub.3)alkyl, cyclohexylene, cyclohexylene(C.sub.1 -C.sub.3)alkyl or C.sub.1 -C.sub.5 alkylene, R.sup.7 is hydrogen or C.sub.1 -C.sub.4 alkyl, and R.sup.14 is a group --C(.dbd.NH)R.sup.8, wherein R.sup.8 is hydrogen or C.sub.1 -C.sub.4 alkyl or a group --NR.sup.9 R.sup.10, wherein R.sup.9 and R.sup.10 are the same or different and are hydrogen or C.sub.1 -C.sub.4 alkyl; or a pharmacologically acceptable salt thereof.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: July 18, 2000
    Assignee: Sankyo Company, Limited
    Inventors: Isao Kawamoto, Yasuo Shimoji, Katsuya Ishikawa, Katsuhiko Kojima, Hiroshi Yasuda, Satoshi Ohya, Yukio Utsui
  • Patent number: 6082761
    Abstract: A side air bag device has an air bag and a substantially cylindrical inflator for supplying inflation gas to the air bag. The air bag includes a cloth bag and is installed in a vehicle interior in a folded state along the edge of a door opening. The air bag deploys so as to cover the door opening when it inflates. The air bag has a substantially cylindrical tubular gas inflow portion. This gas inflow portion is connected to the inflator so that it covers the inflator. The gas inflow portion is clamped to the outer circumferential surface of the inflator. With a side air bag device according to the invention it is not necessary to use a long pipe that from the inflator and it is possible to increase the freedom of installation of the device and also reduce its weight and cost.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: July 4, 2000
    Assignees: Toyoda Gosei Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Hisaaki Kato, Toshinori Tanase, Yasuo Ochiai, Hiroshi Yasuda, Hiroki Nakajima
  • Patent number: 6072185
    Abstract: A device exposing a wafer to charged-particle beams in an exposure process generates a plurality of micro beams and controls deflection of each of the micro beams, relative to whether or not the micro beams reach the wafer, in accordance with control data. A data processing unit inserts data-position-adjustment data into the control data for each exposure. A first data-storage unit stores the control data, inserted with the data-position-adjustment data, and outputs the control data at a time of the exposure process. Storage positions of the control data in the first data-storage unit are adjusted by the data-position-adjustment data so that the control data can be continuously read from the first data-storage unit for maintaining a continuous exposure process.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: June 6, 2000
    Assignee: Fujitsu Limited
    Inventors: Soichiro Arai, Kenichi Miyazawa, Hidefumi Yabara, Hiroshi Yasuda
  • Patent number: 6063782
    Abstract: Pyrrolopyridazine derivatives having the general formula. ##STR1## In the above formula, R.sup.1 represents a C.sub.2 -C.sub.6 alkenyl-group, a halogeno-C.sub.2 -C.sub.6 -alkenyl group, a C.sub.6 -C.sub.10 aryl-C.sub.2 -C.sub.6 -alkenyl group, a C.sub.2 -C.sub.6 alkynyl group, a C.sub.3 -C.sub.7 cycloalkyl group, a C.sub.3 -C.sub.7 cycloalkyl-C.sub.1 -C.sub.6 -alkyl group, a C.sub.5 -C.sub.7 cycloalkenyl-C.sub.1 -C.sub.6 -alkyl group or a halogeno-C.sub.1 -C.sub.6 -alkyl group; R.sup.2 and R.sup.3 are the same or different and each represents a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group or a C.sub.6 -C.sub.10 aryl group; R.sup.4 represents a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group; R.sup.5 represents a C.sub.6 -C.sub.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: May 16, 2000
    Assignees: Sankyo Company, Limited, Ube Industries, Ltd.
    Inventors: Tomio Kimura, Nobuhiko Shibakawa, Hiroshi Fujiwara, Etsuro Itoh, Keiji Matsunobu, Keiichi Tabata, Hiroshi Yasuda, Yoshimi Fujihara, deceased
  • Patent number: RE37084
    Abstract: Disclosed is an objective lens driving apparatus having a holder 9 holding an objective lens 1 and connected to a base 17 through at least four linear members 13, such that the holder 9 can be moved both in the focussing direction and in the tracking direction orthogonal to the focussing direction through the flexing of the linear members 13. Undesirable local resonance can be suppressed due to the use of the linear members 13 in support of the holder 9.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: March 6, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masashi Ito, Hiroshi Yasuda, Hiroyuki Nakamura, Toshiki Itoi