Inventor

Kenzaburou Iijima

Inventor

Hamamatsu, JP

Overview

26→

Patents

1987–2006

Patent span

Electricity

Primary field (CPC H)

Patents· 26 as inventor

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

H03Mprimary

H03MCoding16%

G01DMeasuring not specially adapted for a specific variable14%

G01PMeasuring linear or angular speed, acceleration, deceleration, or shock12%

H10NElectric solid-state devices not otherwise provided for8%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h106%

A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing4%

G11BInformation storage based on relative movement between record carrier and transducer4%

H01FMagnets4%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

B22FWorking metallic powder2%

PatentTitleYear

7,026,712'Peltier module with durable power supply lines and exothermic module with built-in cooler'2006 6,942,399'Optical fiber coupler reinforcing member and optical fiber coupler'2005 6,917,638'Heat radiator for electronic device and method of making it'2005 5,946,597'Semiconductor chip mounting method'1999 5,481,355'Flying spherical body measuring apparatus'1996 5,241,140'Speaker diaphragm'1993 5,131,986'Golf club head and its manufacturing'1992 5,037,800'Method of drawing glass encased superconductive oxide core'1991 5,012,238'Absolute encoder'1991 5,007,057'Power source monitor and a rotary encoder with such a monitor'1991 4,987,040'Magnetic recording medium for displacement detectors'1991 4,987,414'Signal processing circuit for an encoder'1991 4,983,916'Compact magnetic encoder'1991 4,954,803'Magnetic-resistor sensor and a magnetic encoder using such a sensor'1990 4,944,028'Non-contact type pattern sensor with variable clearance compensation'1990 4,908,076'FE-B magnets containing Nd-Pr-Ce rare earth elements'1990 4,894,097'Rare earth type magnet and a method for producing the same'1990 4,879,674'Input circuit for a digital phase locked loop'1989 4,855,740'Keyboard'1989 4,851,752'Magnetic encoder and a method for producing the same'1989 4,847,879'Frequency sensing and control circuit'1989 4,811,254'Displacement detector for an encoder'1989 4,806,860'Overlapped magnetoresistive displacement detecting transducers having closely spaced longitudinal centers'1989 4,782,329'Displacement detector for an encoder'1988 4,768,119'Non-contact head with variable clearance compensating means'1988 4,683,013'Method for producing a shadow mask for a color cathode ray tube'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1990Patents assigned to NIPPON MUSICAL INSTRUMENTS MFG (6)· patent assignee history

1987–2005Based in Hamamatsu, JP· patent location history

1989–2006Patents assigned to YAMAHA CORP (19)· patent assignee history

1989–2006Based in Shizuoka, JP· patent location history

2005Patents assigned to RICHSTONE LTD (1)· patent assignee history

2005Based in Iwata, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
YAMAHA CORP	19	1989–2006
NIPPON MUSICAL INSTRUMENTS MFG	6	1987–1990
RICHSTONE LTD	1	2005

Locations

Location	Patents	Span
Hamamatsu, JP	15	1987–2005
Shizuoka, JP	10	1989–2006
Iwata, JP	1	2005