Patents by Inventor Akira Kajikawa
Akira Kajikawa 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).
-
Patent number: 6051533Abstract: This invention relates to dry, water soluble, pesticidally acceptable particulate compositions, to a method of use thereof for killing or controlling pests including weeds and to a process for preparing such compositions. This invention also relates to dry, water soluble and/or water dispersible, pesticidally acceptable particulate herbicidal compositions containing one or more herbicides, a herbicidal method of use thereof and to a process for preparing such compositions. The dissolution or dispersible rates of particulate pesticidal compositions in water are enhanced by the presence of a small but effective amount of an organosilicone block copolymer wetting agent or a fluorocarbon wetting agent.Type: GrantFiled: September 22, 1997Date of Patent: April 18, 2000Assignee: Monsanto CompanyInventors: Akira Kajikawa, Masuo Kuchikata, Ronald O. Richardson, Tatsuo Sato
-
Patent number: 5445203Abstract: A belted radial ply tire which comprises a bead core disposed in each bead portion, a carcass extending between the bead portions and turned up around the bead cores, and a belt comprising at least two cross plies disposed radially outside the carcass and inside the tread, andin a state that the tire is mounted on its regular rim and inflated to its regular inner pressure but loaded with no tire load, the effective belt width BW of the effective belt part BE of the belt, the belt edge camber height CH of the belt, and the tire section width TW satisfy2.50(BW/TW)-1.25<CH<13.3(BW/TW)-4.65.Type: GrantFiled: December 5, 1991Date of Patent: August 29, 1995Assignee: Sumitomo Rubber Industries Ltd.Inventors: Kenji Saito, Akira Kajikawa, Akihiro Nakatani, Atsushi Yamahira, Hiroyuki Noma, Kazuhiko Kawamura
-
Patent number: 5391437Abstract: A high-strength composite material obtained by kneading a mixture comprising a non-hydraulic inorganic material, a water-soluble polymer and water, molding the kneaded mixture, drying the thus molded material and, optionally, treating the dried molded material with an isocyanate compound, and a process for producing a high-strength composite material which comprises the steps of kneading a mixture comprising a non-hydraulic inorganic material, a water-soluble polymer and water, molding the kneaded mixture, and drying the thus molded material.Type: GrantFiled: August 20, 1993Date of Patent: February 21, 1995Assignee: Nippon Kayaku Kabushiki KaishaInventors: Takaaki Miyasaka, Akira Kajikawa, Masayuki Kiyomoto, Hiroshi Sakurai, Motokazu Mano
-
Patent number: 5360044Abstract: A pneumatic radial tire has a tread surface extending along a specific curvature plane which includes a first arc with the radius R1 having a center on the tire's equatorial plane and passing through the tire's equatorial point, a second arc with the radius R2 having a center on the tire's equatorial plane and intersecting with the first arc at an intersection distant from the tire's equatorial plane by 0.2 to 0.25 times the tire width SW, and a third arc with the radius R3 passing through a ground contact outer edge point of the ground contact surface, when a standard load is applied, and a belt intermediate height point on the tread surface. In the specific curvature plane, the curvature radius ratio R2/R3 is set in a range from 4 to 12, and the curvature radius ratio R1/R2 is set in a range from 1.2 to less than 1.6 when the aspect ratio H/SW is 0.70 or more. The tread surface is provided with a main circumferential groove, preferably having a groove width of 0.06 to 0.Type: GrantFiled: June 18, 1993Date of Patent: November 1, 1994Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kenji Saito, Akira Kajikawa, Kazuo Asano
-
Patent number: 5342445Abstract: A hydraulic composition comprising blast furnace slag powder, a water-soluble polymer and an alkaline substance, and a high-strength composite material produced by kneading and molding a composition which comprises blast furnace slag powder, a water-soluble polymer, an alkaline substrate and water, and wet curing the molded composition. The high-strength composite material has high bending strength and excellent water resistance by using uncostly blast furnace slag powder.Type: GrantFiled: March 9, 1993Date of Patent: August 30, 1994Assignee: Nippon Kayaku Kabushiki KaishaInventors: Masayuki Kiyomoto, Akira Kajikawa, Toru Murakado, Hiroshi Sakurai, Motokazu Mano, Kazutika Sizume
-
Patent number: 5323826Abstract: A pneumatic radial tire has a tread surface extending along a specific curvature plane which includes a first arc with the radius R1 having a center on the tire's equatorial plane and passing through the tire's equatorial point, a second arc with the radius R2 having a center on the tire's equatorial plane and intersecting with the first arc at an intersection distant from the tire's equatorial plane by 0.2 to 0.25 times the tire width SW, and a third arc with the radius R3 passing through a ground contact outer edge point of the ground contact surface, when a standard load is applied, and a belt intermediate height point on the tread surface. In the specific curvature plane, the curvature radius ratio R2/R3 is set in a range from 1.2 to less than 1.6 when the aspect ratio H/SW is 0.70 or more. The tread surface is provided with a main circumferential groove, preferably having a groove width of 0.06 to 0.Type: GrantFiled: July 14, 1993Date of Patent: June 28, 1994Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kenji Saito, Akira Kajikawa, Kazuo Asano
-
Patent number: 5309966Abstract: A pneumatic radial tire has a tread surface extending along a specific curvature plane which includes a first arc with the radius R1 having a center on the tire's equatorial plane and passing through the tire's equatorial point, a second arc with the radius R2 having a center on the tire's equatorial plane and intersecting with the first arc at an intersection distant from the tire's equatorial plane by 0.2 to 0.25 times the tire width SW, and a third arc with the radius R3 passing through a ground contact outer edge point of the ground contact surface, when a standard load is applied, and a belt intermediate height point on the tread surface. In the specific curvature plane, the curvature radius ratio R2/R3 is set in a range from 4 to 12, and the curvature radius ratio R1/R2 is set in a range from 1.6 to less than 2.6 when the aspect ratio H/SW is more than 0.55 and less than 0.70. The tread surface is provided with a main circumferential groove, preferably having a groove width of 0.06 to 0.Type: GrantFiled: July 24, 1993Date of Patent: May 10, 1994Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kenji Saito, Akira Kajikawa, Kazuo Asano
-
Patent number: 5299612Abstract: A pneumatic radial tire has a tread surface extending along a specific curvature plane which includes a first arc with the radius R1 having a center on the tire's equatorial plane and passing through the tire's equatorial point, a second arc with the radius R2 having a center on the tire's equatorial plane and intersecting with the first arc at an intersection distant from the tire's equatorial plane by 0.2 to 0.25 times the tire width SW, and a third arc with the radius R3 passing through a ground contact outer edge point of the ground contact surface, when a standard load is applied, and a belt intermediate height point on the tread surface. In the specific curvature plane, the curvature radius ratio R2/R3 is set in a range from 4 to 12, and the curvature radius ratio R1/R2 is set in a range from 2.6 to 4.6 when the aspect ratio H/SW is 0.55 or less. The tread surface is provided with a main circumferential groove, preferably having a groove width of 0.06 to 0.Type: GrantFiled: November 27, 1992Date of Patent: April 5, 1994Assignee: Sumitomo Rubber Industries, Inc.Inventors: Kenji Saito, Akira Kajikawa, Kazuo Asano
-
Patent number: 5277235Abstract: A pneumatic radial tire has a tread surface extending along a specific curvature plane which includes a first arc with the radius R1 having a center on the tire's equatorial plane and passing through the tire's equatorial point, a second arc with the radius R2 having a center on the tire's equatorial plane and intersecting with the first arc at an intersection distant from the tire's equatorial plane by 0.2 to 0.25 times the tire width SW, and a third arc with the radius R3 passing through a ground contact outer edge point of the ground contact surface, when a standard load is applied, and a belt intermediate height point on the tread surface. The tread surface is provided with a main circumferential groove, preferably having a groove width of 0.06 to 0.10 times the tire width SW, extending near said intersection of the first arc and the second arc in the tire circumferential direction for dividing the tread surface into the crown part and an outer shoulder part.Type: GrantFiled: October 21, 1992Date of Patent: January 11, 1994Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kenji Saito, Akira Kajikawa, Kazuo Asano
-
Patent number: 5222537Abstract: A pneumatic radial tire has a thread surface extending along a specific curvature plane which includes a first arc with the radius R1 having a center on the tire's equatorial plane and passing through the tire's equatorial point, a second arc with the radius R2 having a center on the tire's equatorial plane and intersecting with the first arc at an intersection distant from the tire's equatorial plane by 0.2 to 0.25 times the tire width SW, and a third arc with the radius R3 passing through a ground contact outer edge point of the ground contact surface, when a standard load is applied, and a belt intermediate height point on the tread surface. In the specific curvature plane, the curvature radius ratio R2/R3 is set in a range from 4 to 12, and the curvature radius ratio R1/R2 is set in a range from 2.6 to 4.6 when the aspect ratio H/SW is 0.55 or less. The tread surface is provided with a main circumferential groove, preferably having a groove width of 0.06 to 0.Type: GrantFiled: October 18, 1990Date of Patent: June 29, 1993Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kenji Saito, Akira Kajikawa, Kazuo Asano
-
Patent number: 5125968Abstract: A recording liquid for ink jet recording, which comprises an aqueous medium, a pigment and, as a dispersant, at least one member selected from the group consisting of compounds of the following formula (I) to (X): ##STR1## wherein R.sup.1 is a C.sub.8-20 alkyl group, m is an integer of from 1 to 3, and M is Na or NH.sub.4, ##STR2## wherein R.sup.2 is a C.sub.8-20 alkyl group, n is an integer of from 1 to 3, and M is Na or NH.sub.4, ##STR3## wherein each of R.sup.3 and R.sup.4 is a C.sub.6-16 alkyl or alkenyl group, and M is Na or NH.sub.4, ##STR4## wherein R.sup.5 is a C.sub.10-20 alkyl or alkenyl group, and M is Na or NH.sub.4, ##STR5## wherein R.sup.6 is a C.sub.6-16 alkyl or alkenyl group, and M is Na or NH.sub.4, ##STR6## wherein R.sup.7 is a C.sub.10-20 alkyl or alkenyl group, and M is Na or NH.sub.4, ##STR7## wherein R.sup.8 is a C.sub.10-20 alkyl or alkenyl group, R.sup.9 is a C.sub.1-4 alkyl group and R.sup.10 is a C.sub.1-3 alkylene group, and M is Na or NH.sub.4, ##STR8## wherein R.sup.11 is a C.Type: GrantFiled: March 20, 1991Date of Patent: June 30, 1992Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Akira Kajikawa, Tomio Yoneyama
-
Patent number: 5092166Abstract: An apparatus for determining the shape of contact patch and the contact pressure of a tire comprises a contact member made of a transparent material, a pressing unit for pressing the outer peripheral surface of the tire against the contact member, a sheet having elastic projections arranged regularly on one surface thereof and uniformly distributed thereover, and an observation device for observing through the contact member the projections as deformed when the tire is pressed against the contact member with the sheet interposed therebetween and with the projections thereof facing the contact member. The shape of contact patch and contact pressure of the tire can be determined by observing deformed projections by the device.Type: GrantFiled: January 28, 1991Date of Patent: March 3, 1992Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Yasuo Wada, Akira Kajikawa
-
Patent number: 5088321Abstract: An apparatus and method in which light from source is kept within a transparent moving roadway and a tire tread is pressed onto one surface of the roadway. The ground contact patch of the tire is observed from the opposite side, and the ground contact area and the non-ground contact area of the tire tread is distinguished clearly. The dynamic behaviour of the ground contact patch of the rotating tire roadway can be observed by means of a camera unit. The information obtained can be utilized for tire design to improve tire performance.Type: GrantFiled: October 26, 1990Date of Patent: February 18, 1992Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Akira Kajikawa, Kenji Saito
-
Patent number: 5058646Abstract: A pneumatic safety tire in which each sidewall portion is provided with a minimum thickness at a position E between an outer edge point A and a 65% height point B both located on each side of the tire equator, where the outer edge points A are defined as the axially outer edges of a ground contacting region on the tread surface in a standard loaded state in which the tire mounted on a regular rim and inflated to a regular pressure is loaded with a regular load, and the 65% height points B are defined as the positions at 65% height of the tire section height H from the bead base in a standard unloaded state in which the tire mounted on the regular rim and inflated to the regular pressure is kept free of load, and further the thickness of each sidewall portion is gradually increased from the minimum thickness position E toward the 65% height point B.Type: GrantFiled: November 27, 1989Date of Patent: October 22, 1991Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Akira Kajikawa, Yoshihide Kojima, Hiroshi Itho
-
Patent number: 5031680Abstract: A pneumatic tire having tread blocks provided in the side walls with grooves opened at the top of the block, the depth gW of each groove in the axial direction of the tire being in the range of 5 to 50% of the block width BW, the width gL of each groove in the circumferential direction being in the range of 5 to 25% of the block length BL, the height gH of each groove at the block side wall being in the range of 15 to 80% of the depth GH of a main groove dividing the block, whereby performances on the snowy and icy roads and noise generation and wear resistance on the normal roads are well improved in good balance.Type: GrantFiled: July 26, 1989Date of Patent: July 16, 1991Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Akira Kajikawa, Saneto Saito, Kenji Saito