Inventor
OKUMURA HIROFUMI
JP25 patents
⚠️ This page may combine multiple inventors who share the name “OKUMURA HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALPS ELECTRIC CO LTD
23 patentsUS6341426B1Jan 29, 2002
Rotation angle sensor and torque sensor
ALPS ELECTRIC CO LTD64 citations96
US6246232B1Jun 12, 2001
Rotation sensor for generating electric signals corresponding to turning angle and turning direction of detection target
ALPS ELECTRIC CO LTD74 citations96
US6424147B1Jul 23, 2002
Rotation angle detection apparatus for calculating a rotation angle by attaining an arctangent angle of a dividend where a small amplitude absolute value of two sinusoidal wave detection signals having a phase difference is divided by a large amplitude absolute value
ALPS ELECTRIC CO LTD26 citations92
US5315758AMay 31, 1994
Method for manufacturing slide electrical contact
ALPS ELECTRIC CO LTD21 citations92
US6900713B2May 31, 2005
Magnetic switch capable of instantaneous switching of an output signal and magnetic sensor
ALPS ELECTRIC CO LTD22 citations91
US7521924B2Apr 21, 2009
Member position detection apparatus not affected by external magnetic field
ALPS ELECTRIC CO LTD11 citations84
US6720762B2Apr 13, 2004
Rotation-angle detecting device capable of detecting absolute angle with simple configuration
ALPS ELECTRIC CO LTD19 citations84
US7064537B2Jun 20, 2006
Rotation angle detecting device
ALPS ELECTRIC CO LTD17 citations83
US6784774B1Aug 31, 2004
Magnetic switch capable of performing normal detection for a long period of time
ALPS ELECTRIC CO LTD8 citations74
US6474146B2Nov 5, 2002
Rotary sensor capable of high-precision detection of rotation angle transmitted from outside
ALPS ELECTRIC CO LTD11 citations74
US6445278B1Sep 3, 2002
Rotary sensor capable of detecting rotation angle of shaft to be detected with high accuracy
ALPS ELECTRIC CO LTD8 citations74
US6396386B2May 28, 2002
Angle sensor which makes it possible to prevent rattling caused by backlash between gears inside the angle sensor
ALPS ELECTRIC CO LTD7 citations74
US6386020B1May 14, 2002
Rotary sensor capable of high-precision detection of rotation angle transmitted from outside
ALPS ELECTRIC CO LTD9 citations74
US6359432B1Mar 19, 2002
Connector and turning angle sensor using same
ALPS ELECTRIC CO LTD9 citations74
US6539329B2Mar 25, 2003
Apparatus for detecting rotational angle by employing two or more detection signals based on rotational angle and rotational direction of rotating member
ALPS ELECTRIC CO LTD12 citations73
US6456065B2Sep 24, 2002
Device for detecting the rotational angle of a rotary member
ALPS ELECTRIC CO LTD7 citations73
US6484119B1Nov 19, 2002
Input device having deflection detecting elements
ALPS ELECTRIC CO LTD12 citations71
US6809513B2Oct 26, 2004
Rotary position sensor having waterproof, explosion-protective structure
ALPS ELECTRIC CO LTD8 citations69
US5345215ASep 6, 1994
Variable resistor device with reduced slider vibration
ALPS ELECTRIC CO LTD16 citations67
US6687647B2Feb 3, 2004
Rotation-angle detecting device capable of precisely detecting absolute angle
ALPS ELECTRIC CO LTD4 citations63
US6603305B2Aug 5, 2003
Rotary encoder having code member rotating along accurate circle as shaft rotates
ALPS ELECTRIC CO LTD5 citations61
US6507270B2Jan 14, 2003
Linear operation type electric part
ALPS ELECTRIC CO LTD3 citations58
US9915710B2Mar 13, 2018
Magnetic sensor, method of manufacturing magnetic sensor, and method of designing magnetic sensor
ALPS ELECTRIC CO LTD0 citations37