William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 8096586 | Double-pipe joint In a double-pipe joint for connecting and coupling a double pipe (H) consisting of outer and inner pipes (h2, h1) made of a fluororesin tube, an inner joint portion (T1) for coupling the inner pipe is formed by: a sleeve (2) which is to b... | 01/17/2012 |
| 8016264 | Rotary-valve and adsorption separation system A rotary valve comprising sliding members for supplying treatment gas containing water vapor to a plurality of treatment processes is provided. The rotary valve comprises sliding members (1, 2; 4, 6), through which open flow passages (8, 9, 10), having... | 09/13/2011 |
| 7976028 | Non-asbestos gasket By improving a metal gasket having a corrugated portion which is advantageous in sealing property, a non-asbestos gasket in which the sealing property is further improved is provided. A non-asbestos gasket has a three-layer structured sealing portion S configured by... | 07/12/2011 |
| 7942165 | Connection structure between integrated panel and fluid device A connecting structure for an integration panel and a fluid device in which an excellent sealing property can be held even when substantially no further fastening is performed, and the assembling workability is improved is provided. When an integration panel 1 | 05/17/2011 |
| 7931307 | Double-pipe joint In a double-pipe joint for connecting and coupling a double pipe (H) consisting of outer and inner pipes (h2, h1) made of a fluororesin tube, an inner joint portion (T1) for coupling the inner pipe formed by: a sleeve (2) which is to be p... | 04/26/2011 |
| 7883093 | Mechanical seal A mechanical non-contact gas seal including a rotary scaling ring and a stationary sealing ring that is engaged and held in an inner periphery of a seal case by means of O-rings so as to move in an axial direction thereof. The O-rings engage with the outer periphery... | 02/08/2011 |
| 7815194 | Mechanical seal and mechanical seal device A mechanical seal 4 includes a rotary sealing ring 8 which is fixed to a rotary shaft body 2 and a stationary sealing ring 9 which is movably held to a tubular case body 1 in an axial direction thereof, and seals a space between in... | 10/19/2010 |
| 7726659 | Static pressure type non-contact gas seal The present invention provides a static pressure type non-contact gas seal which, even when supply of seal gas 6 to the space between sealing end surfaces 3a and 4a has stopped unexpectedly, can be safely used with no possibility t... | 06/01/2010 |
| 7695026 | Tube device, and piping system including the tube device A tube includes a casing made of a fluororesin. The casing surrounds a fluid tube and lid members, each made of a fluororesin and include a receiving portion for receiving one end portion of the tube. At least one sealing face is disposed in the receiving portion. U... | 04/13/2010 |
| 7614338 | Piston, method of producing the piston, and pump having the piston A piston 1 which is to be movably supported in a cylinder 11 of a pump 10 to be reciprocally driven is formed by a fluororesin so that it is not impaired by a corrosive liquid. A cylindrical outer peripheral portion 2 of the piston 1 | 11/10/2009 |
| 7565065 | Fluid heater and fluid heating apparatus A fluid heater is configured by passing a cartridge heater H covered by a fluororesin, through a casing 1. The casing 1 has: a fluororesin-made case body 4 which incorporates the cartridge heater H; fluororesin-made lid bodies 5 which are... | 07/21/2009 |
| 7530602 | Double-pipe joint In a double-pipe joint for connecting and coupling a double pipe consisting of outer and inner pipes made of a resin tube, an inner joint portion for coupling the inner pipe formed by: a sleeve which is to be pressingly fitted into an inner-pipe end portion; an inne... | 05/12/2009 |
| 7448631 | Braiding yarn made of expanded graphite, and gland packing In a braiding yarn made of expanded graphite 1, a reinforcing wire member 3 made of a stainless steel wire which is easily plastically deformed, and having a diameter of 0.05 to 0.2 mm is spirally wound around the outer periphery of a twisted expanded ... | 11/11/2008 |
| 7442329 | Method of manufacturing separator for fuel cells A separator for fuel cells is provided, which has excellent electrical conductivity, mechanical strength and gas impermeability. The separator is a molded article of a carbon-phenol resin molding compound obtained by reacting a phenol with an aldehyde in the presenc... | 10/28/2008 |
| 7374409 | Reciprocating pump A suction passage (1) and a discharge passage (2) for a to-be-transferred fluid are disposed in a pump body (3). A bottomed cylindrical bellows (6) is integrally coupled to the axial rear side of the pump body to form a closed space (7... | 05/20/2008 |
| 7353645 | Material for gland packing and the gland packing A reinforcing member made from a fibrous material and disposed at least on one face of a strip-like expanded graphite to form a strip-like base member. The base member is stranded to be formed as a cord-like member. At this time, one side end edge of the base member... | 04/08/2008 |
| D563531 | Fluid gasket | 03/04/2008 |
| 7314239 | Tube device, and piping system including the tube device A tube 4 includes a casing 1 made of a fluororesin. The casing 1 surrounds a fluid tube 3 and lid members 5 each made of a fluororesin and include a receiving portion 8 for receiving one end portion of the tube 4. At ... | 01/01/2008 |
| 7229076 | Mechanical seal A balance ratio for a stationary seal ring is designed to allow a seal face to be opened when, with a rotary seal ring at standstill, steam of a predetermined pressure is supplied to an endo-fluid region while a sealing-fluid region is brought into an exhausting sta... | 06/12/2007 |
| RE39584 | Pipe joint made of resin The present invention relates to a pipe joint made of resin used for laying pipes in which a high-purity liquid, ultra pure water or the like flow. According to the pipe joint of the present invention, a sealing surface pressure is generated in both axial and radial... | 04/24/2007 |
| 7155892 | Material for gland packing and the gland packing A gland packing including strip-like expanded graphite is disposed on one face of a sheet-like reinforcing member configured by a fibrous material to form a strip-like base member. The base member is stranded to be formed as a cord-like member. The outside of the co... | 01/02/2007 |
| 7140171 | Material for gland packing and the gland packing A material for gland packing including a sheet-like reinforcing member configured by a fibrous material disposed at least on one face of a strip-like expanded graphite to form a strip-like base member. The base member is stranded to be formed as a cord-like member. ... | 11/28/2006 |
| 7134850 | Fitted assembly bellows pump In a pump employing a bellows, individual members are formed from resins and pump components including a fitted assembly formed by fitting plural members with each other form a structure unit which is tightly inserted in an external cover and constrained on the oppo... | 11/14/2006 |
| 7086650 | Gland packing The present invention provides a gland packing in which impairment of the sealing performance due to cracks that unwillingly occur in an end portion in the width direction of an expanded graphite tape of a braiding yarn in the gland packing can be suppressed. In gla... | 08/08/2006 |
| 7033692 | Fuel cell separator According to the invention, in a separator molded member (4A) for a fuel cell which is produced by: loading a complex compound that is configured by bonding graphite powder by means of a thermosetting resin, into a mold (14); and forming ribs (11 | 04/25/2006 |
| 7029783 | Fuel cell separator and production method therefor According to the invention, in a separator (4) for a fuel cell which is produced by: loading a complex compound that is configured by bonding graphite powder by means of a thermosetting resin, into a mold (14); and forming ribs (11) for forming ... | 04/18/2006 |
| 6996619 | Network service So as to provide a network service that allows a specific service to be provided and received safely for both the user and service provider, a service provider providing a user identification file that is installed in a client computer used by a user whose user elig... | 02/07/2006 |
| 6945761 | Fluid apparatus having downwardly inclined lower lamella portion of a bellows A bellows that is extendingly and contractingly deformable in the axial direction is placed in a pump body and forms a liquid chamber inside the bellows. A suction portion and a discharge portion are formed in an inner bottom face of the pump body facing the liquid ... | 09/20/2005 |
| 6896299 | Resin pipe joint A cylindrical projecting portion is disposed in a projected tip end portion of an inner ring which is to be pressingly inserted into one end portion of a pipe member to be integrated therewith, an inner radial face of the cylindrical projecting portion is formed as ... | 05/24/2005 |
| 6864008 | Separator for a fuel cell and manufacturing method of the separator To provide a separator for a fuel cell made of graphite excellent in mechanical strength and gas impermeability as well as electric characteristic properties, a separator for a fuel cell is produced from a molded body produced by filling a graphite powder 21 ... | 03/08/2005 |
| 6815111 | Separator for a fuel cell and a method of producing the same In a separator for a fuel cell and a method of producing a separator for a fuel cell according to the invention, bond-carbon is used in which composition ratios are set to 85 to 97 wt. % (preferably, 91 to 96 wt. %) of graphite powder having an average diameter in a... | 11/09/2004 |
| 6776440 | Method and structure for preventing slipping-off of a tube in a pipe joint made of resin A structure for preventing slipping-off of a tube in a pipe joint made of resin in which a union nut (2) is fastened to a joint body (1) to cause a pressing edge portion (19a) of the union nut (2) to abut against a diameter-increas... | 08/17/2004 |
| 6708479 | Braiding yarn made of expanded graphite The present invention relates to a braiding yarn made of expanded graphite for a gland packing which is to be used in a shaft seal part of a fluid apparatus or the like. In the braiding yarn made of expanded graphite of the invention, a braiding yarn base material o... | 03/23/2004 |
| 6685449 | Fluid apparatus including gravity induced check valves and downwardly inclined lower lamella portion of a bellows A bellows that is extendingly and contractingly deformable in the axial direction is placed in a pump body, and a liquid chamber is formed inside the bellows. A suction port and a discharge port are formed in an inner bottom face of the pump body facing t... | 02/03/2004 |
| 6660420 | Separator for a fuel cell and a method of producing the same In a separator for a fuel cell and a method of producing a separator for a fuel cell according to the invention, bondcarbon is used in which composition ratios are set to 60 to 90 wt. % (preferably, 70 to 87 wt. %) of graphite powder having an average dia... | 12/09/2003 |
| 6644007 | Braiding yarn made of expanded graphite The present invention relates to a braiding yarn made of expanded graphite for a gland packing which is to be used in a shaft seal part of a fluid apparatus or the like. In the braiding yarn made of expanded graphite of the invention, an expanded graphite... | 11/11/2003 |
| 6612818 | Bellows type pump or accumulator It is an object of the invention to, even in the case where liquid containing a sedimenting material such as slurry is used, prevent sedimenting and aggregation from occurring in a pump. As means for attaining the object, a bellows 7 that is extendingly a... | 09/02/2003 |
| 6604919 | Fluid apparatus such as a pump or an accumulator A fluid device capable of preventing sediment from stagnating and accumulating in a liquid chamber of a pump when a transfer liquid containing sediment such as slurry is used, wherein a suction port (18) and a delivery port (19) and a diaphragm (7) are in... | 08/12/2003 |
| 6572347 | Fluid apparatus such as a pump or an accumulator The invention provides a fluid apparatus in which two or more kinds of chemical liquids can be rapidly stirred and mixed in a pump to a uniform concentration. A barrier membrane such as a bellows or a diaphragm that is reciprocally moved in the axial dire... | 06/03/2003 |
| 6572117 | Gland packing The present invention provides a gland packing in which a phenomenon where reinforcing fibers protruding from ends of adjacent braiding yarns overlap with each other, and the over-lapping reinforcing fibers are interposed over the whole range between expa... | 06/03/2003 |