Inventor

Ken Ishino

Inventor

Nagareyama, JP

Overview

16→

Patents

1977–1996

Patent span

Electricity

Primary field (CPC H)

Patents· 16 as inventor

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

H01Qprimary

H01QAntennas, i.e. radio aerials17%

H05BElectric heating11%

H05KPrinted circuits11%

A47JKitchen equipment6%

G01RMeasuring electric variables6%

H01FMagnets6%

H01PWaveguides6%

Y10TTechnical subjects covered by former us classification6%

A23LFoods, foodstuffs or non-alcoholic beverages, not otherwise provided for3%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers3%

PatentTitleYear

5,537,116'Electromagnetic wave absorber'1996 5,373,296'Electromagnetic wave absorber and wave absorption structure'1994 4,972,191'Wave absorber, and an anechoic chamber using the same'1990 4,742,359'Antenna system'1988 4,689,460'Absorber device for microwave leakage'1987 4,539,433'Electromagnetic shield'1985 4,525,614'Absorber device for microwave leakage'1985 4,515,850'Composite ferrite textile'1985 4,474,676'Electromagnetic interference shielding material'1984 4,335,291'Popped corn making apparatus used in a microwave oven'1982 4,146,854'High frequency attenuator using ferrite beads'1979 4,118,704'Electromagnetic wave-absorbing wall'1978 4,116,906'Coatings for preventing reflection of electromagnetic wave and coating material for forming said coatings'1978 4,082,560'Vessel for use in heating food'1978 4,046,983'Microwave heating oven having seal means for preventing the leakage of microwave energy'1977 4,003,840'Microwave absorber'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1982Patents assigned to TDK ELECTRONICS CO LTD (7)· patent assignee history

1977–1979Based in Nagareyama, JP· patent location history

1982–1985Based in Tokyo, JP· patent location history

1984–1996Patents assigned to TDK CORP (9)· patent assignee history

1987–1996Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TDK CORP	9	1984–1996
TDK ELECTRONICS CO LTD	7	1977–1982

Locations

Location	Patents	Span
Nagareyama, JP	6	1977–1979
Chiba, JP	5	1987–1996
Tokyo, JP	5	1982–1985