Kiyoshi Hirakawa

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Sensor for determining liquid types
- Patent number 11,892,398
- Issue date Feb 6, 2024
- TOYOKO KAGAKU CO., LTD.
- Kiyoshi Hirakawa
- G01 - MEASURING TESTING
Information Patent Grant
Rolling shaft made by high-frequency quenching
- Patent number 6,562,151
- Issue date May 13, 2003
- NSK Ltd.
- Kiyoshi Hirakawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Corrective tempering apparatus for rolling elements
- Patent number 6,248,287
- Issue date Jun 19, 2001
- NSK Ltd.
- Kiyoshi Hirakawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for manufacturing balls for bearing and products thereby
- Patent number 6,119,347
- Issue date Sep 19, 2000
- NSK, Ltd.
- Kiyoshi Hirakawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Corrective tempering method for rolling elements
- Patent number 6,093,268
- Issue date Jul 25, 2000
- NSK Ltd.
- Kiyoshi Hirakawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Rolling bearing
- Patent number 6,012,851
- Issue date Jan 11, 2000
- NSK Ltd.
- Kiyoshi Hirakawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Rolling bearing for supporting rotating spindles
- Patent number 5,860,749
- Issue date Jan 19, 1999
- NSK Ltd.
- Kiyoshi Hirakawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Ball bearing for supporting a spindle rotating at high speed
- Patent number 5,639,168
- Issue date Jun 17, 1997
- NSK Ltd.
- Shingo Noguchi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method for manufacturing balls for bearing and products thereby
- Patent number 5,603,576
- Issue date Feb 18, 1997
- NSK, Ltd.
- Kiyoshi Hirakawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Rolling part steel
- Patent number 5,447,579
- Issue date Sep 5, 1995
- NSK Ltd.
- Kiyoshi Hirakawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Rolling bearing
- Patent number 5,439,300
- Issue date Aug 8, 1995
- NSK Ltd.
- Kiyoshi Hirakawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Rolling-part steel and rolling part employing same
- Patent number 5,077,003
- Issue date Dec 31, 1991
- Nippon Seiko Kabushiki Kaisha
- Tomoki Muraoka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DETECTION CHIP AND OPTICAL DETECTION SYSTEM
- Publication number 20240344997
- Publication date Oct 17, 2024
- THE UNIVERSITY OF KITAKYUSHU
- Seung-Woo LEE
- G01 - MEASURING TESTING
Information Patent Application
SENSOR FOR DETERMINING LIQUID TYPES
- Publication number 20220397516
- Publication date Dec 15, 2022
- TOYOKO KAGAKU CO., LTD.
- Kiyoshi HIRAKAWA
- G01 - MEASURING TESTING
Information Patent Application
Method for Producing Protein
- Publication number 20220251622
- Publication date Aug 11, 2022
- AJINOMOTO CO., INC.
- Yasumichi Koseki
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information Patent Application
Rolling shaft
- Publication number 20020040743
- Publication date Apr 11, 2002
- NSK Ltd
- Kiyoshi Hirakawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Kiyoshi Hirakawa

Person

Patents Grantslast 30 patents

Sensor for determining liquid types

Rolling shaft made by high-frequency quenching

Corrective tempering apparatus for rolling elements

Method for manufacturing balls for bearing and products thereby

Corrective tempering method for rolling elements

Rolling bearing

Rolling bearing for supporting rotating spindles

Ball bearing for supporting a spindle rotating at high speed

Method for manufacturing balls for bearing and products thereby

Rolling part steel

Rolling bearing

Rolling-part steel and rolling part employing same

Patents Applicationslast 30 patents

OPTICAL DETECTION CHIP AND OPTICAL DETECTION SYSTEM

SENSOR FOR DETERMINING LIQUID TYPES

Method for Producing Protein

Rolling shaft