P

Inventor

YAMAMOTO KATSUTOSHI

JP37 patents
⚠️ This page may combine multiple inventors who share the name “YAMAMOTO KATSUTOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DAIKIN IND LTD

27 patents
US5772884AJun 30, 1998

Porous polytetrafluoroethylene film and process for preparation thereof

DAIKIN IND LTD108 citations97
US5234739AAug 10, 1993

Polytetrafluoroethylene porous film and preparation and use thereof

DAIKIN IND LTD120 citations97
US5562986AOct 8, 1996

Polytetrafluoroethylene fibers, polytetrafluoroethylene materials and process for preparation of the same

DAIKIN IND LTD55 citations96
US5409515AApr 25, 1995

Filter apparatus and filter element

DAIKIN IND LTD66 citations96
US5225131AJul 6, 1993

Process for producing multilayer polytetrafluoroethylene porous membrane and semisintered polytetrafluoroethylene multilayer structure

DAIKIN IND LTD85 citations96
US5217666AJun 8, 1993

Process for producing porous polytetrafluoroethylene film

DAIKIN IND LTD54 citations96
US5064593ANov 12, 1991

Process for producing multilayer polytetrafluoroethylene porous membrane

DAIKIN IND LTD85 citations96
US4830062AMay 16, 1989

Porous heat-shrinkable tetrafluoroethylene polymer tube and process for producing the same

DAIKIN IND LTD66 citations96
US4596837AJun 24, 1986

Semisintered polytetrafluoroethylene article and production thereof

DAIKIN IND LTD94 citations96
US6479143B1Nov 12, 2002

Heat-meltable fluororesin fibers

DAIKIN IND LTD50 citations92
US6416896B1Jul 9, 2002

Material for electrode comprising a non-woven fabric composed of a fluorine-containing resin fiber

DAIKIN IND LTD38 citations92
US6235388B1May 22, 2001

Fibrous materials of fluororesins and deodorant and antibacterial fabrics made by using the same

DAIKIN IND LTD46 citations92
US6156681ADec 5, 2000

Multi layered felt, member formed of same, and method of manufacturing same

DAIKIN IND LTD31 citations92
US6133165AOct 17, 2000

Bulky polytetrafluoroethylene filament and split yarn, method of producting thereof, method of producing cotton-like materials by using said filament or split yarn and filter cloth for dust collection

DAIKIN IND LTD40 citations92
US5912077AJun 15, 1999

Cotton-like mixed materials, non-woven fabrics obtained therefrom and process for production thereof

DAIKIN IND LTD31 citations92
US5834528ANov 10, 1998

Polytetrafluoroethylene porous composite film

DAIKIN IND LTD43 citations92
US5807633ASep 15, 1998

Polytetrafluoroethylene composite fiber, cotton-like materials obtained therefrom and processes for production thereof

DAIKIN IND LTD21 citations92
US5171805ADec 15, 1992

Modified polytetrafluoroethylene and process for preparing the same

DAIKIN IND LTD24 citations91
US4440879AApr 3, 1984

Process for preparing filler-containing polytetrafluoroethylene fine powder

DAIKIN IND LTD28 citations91
US5688836ANov 18, 1997

Polytetrafluoroethylene porous material and process for production of the same

DAIKIN IND LTD23 citations90
US4159370AJun 26, 1979

Polytetrafluoroethylene fine powder and process for producing the same

DAIKIN IND LTD34 citations87
US4451616AMay 29, 1984

Process for preparation of filter-containing polytetrafluoroethylene fine powder

DAIKIN IND LTD21 citations80
US6117556ASep 12, 2000

Tape for sealing screw joints

DAIKIN IND LTD12 citations74
US6987224B2Jan 17, 2006

Polytetrafluoroethylene mixed powder used for insulation of product for high frequency signal transmission and product for high frequency signal transmission using the same

DAIKIN IND LTD7 citations73
US5998022ADec 7, 1999

Polytetrafluoroethylene cotton-like materials

DAIKIN IND LTD7 citations73
USD366106SJan 9, 1996

Air filter

DAIKIN IND LTD9 citations73
US6355135B1Mar 12, 2002

Method of laminating gas permeable sheet material

DAIKIN IND LTD4 citations62

KAO CORP

2 patents

TOSHIBA MEMORY CORP

1 patent

HOSIDEN CORP

1 patent

MITSUBISHI HEAVY IND LTD

1 patent

SEKI YUICHIRO

1 patent

SUMCO CORP

1 patent

SEKISIN INDUSTRY CO LTD

1 patent

TAKAI HIROSHI

1 patent

CHONGQING BOMAN NEW MAT CO LTD

1 patent