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Filtering medium for air filters and process for producing the same

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B01D-029/07
  • B01D-046/10
출원번호 US-0315946 (1999-05-21)
우선권정보 JP0328252 (1998-11-18)
발명자 / 주소
  • Kawano Eizo,JPX
  • Nabata Norikane,JPX
  • Maeoka Takuya,JPX
출원인 / 주소
  • Nitto Denko Corporation, JPX
대리인 / 주소
    Sughrue, Mion,Zinn, Macpeak & Seas, PLLC
인용정보 피인용 횟수 : 18  인용 특허 : 21

초록

A filtering medium for air filters wherein its surface conditions have been improved, whereby the porous PTFE membrane is not damaged even after pleating, thus appropriately meeting needs for clean space in clean rooms. The filtering medium comprises a porous polytetrafluoroethylene membrane (2) and

대표청구항

[ What is claimed is:] [1.] A filtering medium for air filters, comprising a laminate of a porous polytetrafluoroethylene membrane and an air-permeable supporting member, wherein at least one of exposed surfaces of the filtering medium comprises a surface of said air-permeable supporting member havi

이 특허에 인용된 특허 (21)

  1. Hirano Seiichi,JPX ; Kusumi Toshio,JPX ; Soda Tomizou,JPX, Air filter unit and method for manufacturing the same.
  2. Hamasaki Sadakatsu,JPX ; Kobayashi Masayuki,JPX ; Yokota Takushi,JPX ; Kobashi Kanako,JPX, Assembly for deaeration of liquids.
  3. Saville Mark K. (Newark DE) Gorak ; Jr. William J. (Elkton MD) Bove Ronald L. (Newark DE), Breathable, non-linting laminate.
  4. Wnenchak Raymond M. ; Bacino John E. ; Stark Stephen K. ; Wildt Erik H., Cleanable filter media and filter elements.
  5. Mallouk Robert S. (Box 332 ; R.D. #1 Chadds Ford PA 19317) Branca Phillip A. (118 Wyeth Way Hockessin DE 19707) Perry Randal L. (100 Stokes Ct. Fayetteville NC 28303), Composite membrane for facilitated transport processes.
  6. Fagan Joseph P. (Huntington CT), Felt-like layered composite of PTFE and glass paper.
  7. Manniso James L. (Newark DE) Sieber Eugene W. (Bear DE) Voshell Glenn R. (Newark DE), Filter cartridge.
  8. Tronto Gregory S. (Wilmington DE) Wnenchak Raymond (Newark DE), Filter cartridge.
  9. Grodek Raymond J. (Seven Hills OH), Filter of polytetrafluoroethylene fibers.
  10. Sassa Robert (Newark DE) Johnson Todd (Wilmington DE) Winkelmayer Richard (North East MD), Filtration fabric laminates.
  11. Miyagi Tokuya (Osaka JPX) Inoue Akihisa (Hirakata JPX) Hamada Katushi (Neyagawa JPX) Fujimori Shoichi (Neyagawa JPX) Hori Yoshihiro (Shimizu JPX), Fluorocarbon filter element.
  12. Oshitari Yoshimi (10-8 ; 1-Chome ; Hon-Cho Tanashi City ; Tokyo-To JPX 188), High performance gas filter assembly.
  13. Stark Stephen K. (Wilmington DE), High temperature, chemical resistant laminate for filtration systems.
  14. Bowser John J. (Newark DE) Hyde Christopher T. (Lincoln University PA), Irradiated expanded polytetrafluoroethylene composites, and devices using them, and processes for making them.
  15. Ashelin Charles J. (Lebanon IN) Thomas Dwight J. (Zionsville IN), Laminated microporous fluorocarbon membrane and fluorocarbon filter cartridge using same.
  16. Murphy ; Jr. William F., Pleatable nonwoven composite article for gas filter media.
  17. Tanaru Shinji (Osaka JPX) Tanaka Osamu (Osaka JPX) Nishibayashi Hirofumi (Osaka JPX) Inoue Osamu (Osaka JPX) Yamamoto Katsutoshi (Osaka JPX) Kusumi Toshio (Osaka JPX), Polytetrafluoroethylene porous film and preparation and use thereof.
  18. Ishino Toshiaki,JPX ; Nabata Norikane,JPX ; Maeoka Takuya,JPX, Porous polytetrafluoroethylene membrane, process for producing the same, sheet-form polytetrafluoroethylene molding, and air filter medium.
  19. Maeoka Takuya,JPX ; Nabata Norikane,JPX ; Ishino Toshiaki,JPX, Production method for laminated air filter.
  20. Goldsmith, Paul S.; Carey, Claire M.; Keeley, Donald E.; Goel, Vinay, Sterile hydrophobic polytetrafluoroethylene membrane laminate.
  21. George Nelson A. (North East MD) Sutsko Michael G. (Glen Mills PA) McKenna Douglas B. (Dover DE), ULPA filter.

이 특허를 인용한 특허 (18)

  1. Kiyotani, Hideyuki; Inoue, Osamu; Inui, Kunihiko; Shibuya, Yoshiyuki; Tanaka, Osamu, Air filter medium, process of producing filter medium, air filter pack for air filters, and air filter unit for air filters.
  2. Sandberg, Leslye, Equipment air filter assembly.
  3. Sandberg,Leslye, Equipment air filter assembly.
  4. George Brandwood Peacock GB, Filter assemblies.
  5. Handley, Michael W.; Brandenhoff, Mark; Patel, Kirit; Sporre, Timothy D., Filter construction for use with air in-take for gas turbine and methods.
  6. Richard Giannetta ; Michael Debes, Filter media.
  7. Inui, Kunihiko; Shibuya, Yoshiyuki; Kasai, Shunji; Yamanaka, Taku, Filter medium equipped with porous film, method of manufacturing same, filter pack, and filter unit.
  8. Nabata Norikane,JPX ; Nagai Yozo,JPX ; Kawano Eizo,JPX ; Maeoka Takuya,JPX, Filter medium for filters.
  9. Kawano, Eizou; Maeoka, Takuya, Filter medium for turbine and methods of using and producing the same.
  10. Smithies, Alan; Clements, Jack T.; Polizzi, Cynthia, High performance gas turbine inlet filter (HEPA) using membrane media.
  11. Chen, Guanghui; Gommeren, Henricus Jacobus Cornelis; Knorr, Lawrence Mark, Liquid filtration media.
  12. Chen, Guanghui; Gommeren, Henricus Jacobus Cornelis; Knorr, Lawrence Mark, Liquid filtration media.
  13. Chen, Guanghui; Gommeren, Henricus Jacobus Cornelis; Knorr, Lawrence Mark, Liquid filtration media.
  14. Hideomi Ishibe JP, Metal filter.
  15. Patel, Kirit; White, Donald H.; Dahlgren, Andrew; Brandimarte, Richard, Microporous membrane for flash distillation.
  16. Kazuhiro Meiji JP; Seiichi Hirano JP; Osamu Inoue JP; Shinji Ohno JP, Packaged air filter part and method of packaging the air filter part.
  17. Mori, Masaaki; Horie, Yuri; Shimatani, Shunichi, Porous polytetrafluoroethylene membrane and air filter medium.
  18. McClary, Bradley Marshall; Poddar, Tarun, Surface-modified fluoropolymer membrane.
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