Inventor

Kunihiko Yoshikawa

Inventor

Suita, JP

Overview

1979–1995

Patent span

Chemistry

Primary field (CPC C)

Patents· 12 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C22Cprimary

C22CAlloys40%

B62LBrakes specially adapted for cycles20%

E21BEarth or rock drilling20%

Y10TTechnical subjects covered by former us classification10%

C21DModifying the physical structure of ferrous metals5%

F28FDetails of heat-exchange and heat-transfer apparatus, of general application5%

PatentTitleYear

5,464,074'Differential spring-back action between bicycle brake arms along with spring-back stopper structure'1995 5,328,001'Side pull bicycle brake with differential spring release and pivotal stopper structure'1994 4,842,823'Austenitic steel having improved high-temperature strength and corrosion resistance'1989 4,799,972'Process for producing a high strength high-Cr ferritic heat-resistant steel'1989 4,652,315'Precipitation-hardening nickel-base alloy and method of producing same'1987 4,421,571'Process for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking'1983 4,400,210'Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking'1983 4,400,211'Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking'1983 4,400,209'Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking'1983 4,400,349'Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking'1983 4,244,235'Apparatus for attaching a brake lever stay to a handle bar of a bicycle'1981 4,143,745'Holder apparatus for pulling-up wire in center pull type caliper brake'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1995Patents assigned to YOSHIKAWA SEISAKUSHO KK (4)· patent assignee history

1979–1981Based in Soka, JP· patent location history

1983–1989Patents assigned to SUMITOMO METAL IND (8)· patent assignee history

1983–1989Based in Suita, JP· patent location history

1989Patents assigned to MITSUBISHI HEAVY IND LTD (1)· patent assignee history

1989Based in Amagasaki, JP· patent location history

1994–1995Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SUMITOMO METAL IND	8	1983–1989
YOSHIKAWA SEISAKUSHO KK	4	1979–1995
MITSUBISHI HEAVY IND LTD	1	1989

Locations

Location	Patents	Span
Suita, JP	7	1983–1989
Saitama, JP	2	1994–1995
Soka, JP	2	1979–1981
Amagasaki, JP	1	1989