Patents by Inventor Hiroyuki Hamada
Hiroyuki Hamada 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: 20240059865Abstract: A shaped body of a fluororesin obtained using a shaping material comprising a powder of a fluororesin. The powder of the fluororesin has a static bulk density of 0.3 g/ml or more and 1.5 g/ml or less, and a particle diameter of 10 ?m or more and 300 ?m or less in terms of D50. Also disclosed is a three-dimensional structure containing the shaped body, and a method of shaping the shaping material.Type: ApplicationFiled: November 2, 2023Publication date: February 22, 2024Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hiroyuki SENDAN, Tadahiro YABU, Yukihiro FUKAGAWA, Kenta MURAYAMA, Tomohiro SHIROMARU, Toshio MIYATANI, Masahiro KONDOU, Hiroyuki HAMADA
-
Patent number: 11866570Abstract: A molded body which is formed from a shaping material containing a fluororesin powder. The fluororesin powder has a D50 of 30 ?m or more and 200 ?m or less and a D10 of 12 ?m or more. Also disclosed is a method for forming a molded body from a shaping material containing the fluororesin powder, the method including controlling the temperature of the fluororesin powder; and irradiating the fluororesin powder with a laser at the controlled temperature to fuse the same.Type: GrantFiled: January 9, 2023Date of Patent: January 9, 2024Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Hirokazu Komori, Junpei Terada, Hiroyuki Sendan, Tadahiro Yabu, Yukihiro Fukagawa, Kenta Murayama, Tomohiro Shiromaru, Toshio Miyatani, Masahiro Kondou, Hiroyuki Hamada
-
Publication number: 20230415387Abstract: Provided is an injection molded article containing a copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, wherein the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 4.7 to 7.0% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 11.0 to 22.0 g/10 min, the melting point of the copolymer is 296 to 305° C., and the amount of fluorine ions dissolving out from the injection molded article into water is 7,500 ?g/m2 or lower.Type: ApplicationFiled: August 15, 2023Publication date: December 28, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hiroyuki HAMADA, Hayato TSUDA, Tadaharu ISAKA, Yukari YAMAMOTO, Yumi ZENKE
-
Patent number: 11845847Abstract: A shaping material for a powder bed fusion method, containing a powder of a fluororesin.Type: GrantFiled: September 6, 2018Date of Patent: December 19, 2023Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Hiroyuki Sendan, Tadahiro Yabu, Yukihiro Fukagawa, Kenta Murayama, Tomohiro Shiromaru, Toshio Miyatani, Masahiro Kondou, Hiroyuki Hamada
-
Publication number: 20230392737Abstract: Provided is a pipe joint including a cylindrical hollow, wherein the wall thickness of a part having the largest wall thickness of the pipe joint is 2 to 7 mm, the ratio of the length of the hollow in the axial direction (L) to the diameter of the hollow (D), (L/D), is 5 or less, the pipe joint contains a copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 2.8 to 6.0% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 4.0 g/10 min or higher and lower than 11.0 g/10 min, and the number of functional groups of the copolymer is 50 or less.Type: ApplicationFiled: August 22, 2023Publication date: December 7, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hayato TSUDA, Tadaharu ISAKA, Yumi ZENKE, Yukari YAMAMOTO, Yasuyuki YAMAGUCHI, Hiroyuki HAMADA
-
Publication number: 20230390980Abstract: Provided is an injection molded article including a bottom surface section, and a side surface section erected from a peripheral edge of the bottom surface section, wherein the height from the bottom surface section of the side surface section is 3.8 cm or larger, the ratio of the height from the bottom surface section of the side surface section to the average thickness of the side surface section (height/thickness) is 19.0 or more, the load applied to the lower end section of the side surface section is 0.8 kPa or higher, the injection molded article contains a copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 4.5 to 6.0% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 35.0 to 60.0 g/10 min, and the number of functional groups of the copolymer is 50 or less.Type: ApplicationFiled: August 22, 2023Publication date: December 7, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hayato TSUDA, Tadaharu ISAKA, Yuri ZENKE, Yukari YAMAMOTO, Yasuyuki YAMAGUCHI, Hiroyuki HAMADA
-
Publication number: 20230390979Abstract: Provided is an injection molded article including a pipe body section forming a flow path of a fluid, and a flange section formed on one end or both ends of the pipe body section, wherein the maximum thickness of the flange section is 2 to 12 mm, the injection molded article contains a copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 2.8 to 6.0% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 4.0 g/10 min or higher and lower than 11.0 g/10 min, and the number of functional groups of the copolymer is 50 or less.Type: ApplicationFiled: August 21, 2023Publication date: December 7, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hayato TSUDA, Tadaharu Isaka, Yumi Zenke, Yukari Yamamoto, Yasuyuki Yamaguchi, Hiroyuki Hamada
-
Publication number: 20230390981Abstract: Provided an injection molded article obtained by injection molding a copolymer using a mold provided with a gate, wherein the copolymer contains tetrafluoroethylene (TFE) unit and a fluoro(alkyl vinyl ether) (PAVE) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 3.5 to 4.7% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 22.0 to 35.0 g/10 min, the number of functional groups of the copolymer is 20 or less per 106 main-chain carbon atoms, and the injection molded article has a gate section corresponding to the gate of the mold, and the ratio of the maximum flow length from the gate section of the injection molded article (a) to the average value of the product thickness on the maximum flow length (b), ((a)/(b)), is 80 to 200.Type: ApplicationFiled: August 22, 2023Publication date: December 7, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hayato TSUDA, Tadaharu ISAKA, Yumi ZENKE, Yukari YAMAMOTO, Yasuyuki YAMAGUCHI, Hiroyuki HAMADA
-
Publication number: 20230390977Abstract: Provided is an injection molded article containing a copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, wherein the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 3.9 to 4.8% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 11.0 to 19.0 g/10 min, the melting point of the copolymer is 296 to 305° C., and the amount of fluorine ions dissolving out from the injection molded article into water is 7,500 ?g/m2 or lower.Type: ApplicationFiled: August 16, 2023Publication date: December 7, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hiroyuki HAMADA, Tadaharu ISAKA, Hayato TSUDA, Yumi ZENKE, Yukari YAMAMOTO, Yasuyuki YAMAGUCHI
-
Publication number: 20230390978Abstract: There is provided an injection molded article obtained by injection molding a copolymer using a mold provided with a gate, wherein the copolymer contains tetrafluoroethylene (TFE) unit and a fluoro(alkyl vinyl ether) (FAVE) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 5.2 to 6.3% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 19.0 to 35.0 g/10 min, the number of functional groups of the copolymer is 50 or less per 106 main-chain carbon atoms, and the injection molded article has a gate section corresponding to the gate of the mold, and the ratio of the maximum flow length (a) from the gate section of the injection molded article to the average value (b) of the product thickness on the maximum flow length, ((a)/(b)), is 80 to 200.Type: ApplicationFiled: August 16, 2023Publication date: December 7, 2023Applicant: DAIKININDUSTRIES,LTD.Inventors: Hayato TSUDA, Hiroyuki HAMADA, Tadaharu ISAKA, Yukari YAMAMOTO, Yumi ZENKE
-
Publication number: 20230383034Abstract: There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 3.3 to 4.2% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of 27.0 to 35.0 g/10 min, and the number of functional groups of 20 or less per 106 main-chain carbon atoms.Type: ApplicationFiled: August 9, 2023Publication date: November 30, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Tadaharu ISAKA, Yumi Zenke, Yukari Yamamoto, Hayato Tsuda, Hiroyuki Hamada
-
Publication number: 20230202088Abstract: A method for producing a tube, which includes: extruding a melt-fabricable fluororesin from a mold of an extruder into a form of a tube, leading the extruded melt-fabricable fluororesin to a cooling device to cool the extruded melt-fabricable fluororesin, and winding a resulting cooled tube onto a winding reel using a winding device. A gas is fed from a head end of the tube wound onto the winding reel into a hollow of the tube, the gas in the hollow is allowed to pass through a gas-introducing entrance of the mold and then through a gas-discharging hole of the mold to discharge the gas outside, thereby allowing the gas to flow along the hollow, and an internal pressure of the hollow is kept higher than atmospheric pressure and lower than 0.5 kgf/cm2.Type: ApplicationFiled: February 17, 2023Publication date: June 29, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hitoshi IMAMURA, Hiroyuki HAMADA, Eri MUKAI
-
Publication number: 20230167269Abstract: A molded body which is formed from a shaping material containing a fluororesin powder. The fluororesin powder has a D50 of 30 µm or more and 200 µm or less and a D10 of 12 µm or more. Also disclosed is a method for forming a molded body from a shaping material containing the fluororesin powder, the method including controlling the temperature of the fluororesin powder; and irradiating the fluororesin powder with a laser at the controlled temperature to fuse the same.Type: ApplicationFiled: January 9, 2023Publication date: June 1, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hirokazu KOMORI, Junpei Terada, Hiroyuki Sendan, Tadahiro Yabu, Yukihiro Fukagawa, Kenta Murayama, Tomohiro Shiromaru, Toshio Miyatani, Masahiro Kondou, Hiroyuki Hamada
-
Publication number: 20230103937Abstract: Provided is a pressure-sensitive adhesive (PSA) sheet including a PSA layer that exhibits improved water resistance. The PSA sheet provided by the present invention includes a PSA layer formed from a water-dispersed PSA composition containing an acrylic polymer as a base polymer, a water-dispersed tackifier resin, and at least any one type of Na ions and K ions. The total amount of Na ions and K ions in the PSA sheet is 0.3 part by weight or more to 0.8 part by weight or less per 100 parts by weight of the PSA sheet.Type: ApplicationFiled: March 2, 2021Publication date: April 6, 2023Applicant: NITTO DENKO CORPORATIONInventors: Hiroyuki HAMADA, Toshihide SUZUKI, Hiroyasu ISHII
-
Patent number: 11555098Abstract: A shaping material for a powder bed fusion method, including a powder of a fluororesin, wherein the fluororesin has a D50 of 30 ?m or more and 200 ?m or less, and the fluororesin has a D10 of 12 ?m or more.Type: GrantFiled: October 27, 2020Date of Patent: January 17, 2023Assignee: DAIKIN INDUSTRIES. LTD.Inventors: Hirokazu Komori, Junpei Terada, Hiroyuki Sendan, Tadahiro Yabu, Yukihiro Fukagawa, Kenta Murayama, Tomohiro Shiromaru, Toshio Miyatani, Masahiro Kondou, Hiroyuki Hamada
-
Publication number: 20220281144Abstract: Provided is a method for producing an injection molded article for obtaining an injection molded article by injection molding a copolymer using an injection molding machine and a mold having a hot runner, wherein the copolymer is a copolymer containing tetrafluoroethylene unit and a fluoroalkyl vinyl ether unit, and the number of functional groups of the copolymer is 100 or less per 106 main-chain carbon atoms.Type: ApplicationFiled: May 26, 2022Publication date: September 8, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hitoshi IMAMURA, Hiroyuki HAMADA, Eri MUKAI, Yuuki KUWAJIMA, Manabu FUJISAWA
-
Publication number: 20220213996Abstract: The present disclosure provides a welded body having a connecting structure formed by welding a first molded body and a second molded body, wherein the first and second molded bodies contain at least one copolymer selected from the group consisting of a tetrafluoroethylene/fluoro(alkyl vinyl ether) copolymer and a tetrafluoroethylene/hexafluoropropylene copolymer, and wherein the connecting structure has a liquid contact surface to be in contact with a liquid having a solubility parameter of 14 to 35 (MPa)1/2, a welded part formed in the connecting structure is not exposed to the liquid contact surface, and the number of particles of 30 nm or larger to be eluted from the liquid contact surface in the connecting structure is 1,000 particles/ml or less.Type: ApplicationFiled: March 22, 2022Publication date: July 7, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hitoshi IMAMURA, Eri MUKAI, Hiroyuki HAMADA, Yuuki KUWAJIMA, Manabu FUJISAWA
-
Publication number: 20220170573Abstract: Provided is a tube comprising a tetrafluoroethylene/fluoroalkyl vinyl ether copolymer, wherein the tube inner surface has a surface roughness Ra of 5 nm or less measured by atomic force microscopy (AFM) with an evaluation length set to 3 ?m, and the tube has an amount of metals eluted from the tube inner surface of 0.30 ng/cm2 or less.Type: ApplicationFiled: February 16, 2022Publication date: June 2, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hitoshi IMAMURA, Hiroyuki HAMADA, Eri MUKAI, Yuuki KUWAJIMA, Manabu FUJISAWA
-
Publication number: 20220025222Abstract: Provided is a water-dispersed PSA composition capable of bringing about greater water resistance. The water-dispersed PSA composition provided by this invention comprises an acrylic polymer as base polymer, a water-dispersed tackifier resin, and a polyacrylic acid. The polyacrylic acid has a number average molecular weight of 2000 to 550×104. The polyacrylic acid content is 0.3 part by weight or higher and 7 parts by weight or lower to 100 parts by weight of the base polymer.Type: ApplicationFiled: November 12, 2019Publication date: January 27, 2022Applicant: NITTO DENKO CORPORATIONInventors: Hiroyuki HAMADA, Toshihide SUZUKI, Hyunhee SHIM
-
Publication number: 20210087354Abstract: A shaping material for a powder bed fusion method, containing a powder of a fluororesin.Type: ApplicationFiled: September 6, 2018Publication date: March 25, 2021Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hiroyuki SENDAN, Tadahiro YABU, Yukihiro FUKAGAWA, Kenta MURAYAMA, Tomohiro SHIROMARU, Toshio MIYATANI, Masahiro KONDOU, Hiroyuki HAMADA