Inventor

SAKAI TETSUYA

JP79 patents

⚠️ This page may combine multiple inventors who share the name “SAKAI TETSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SAKAI TETSUYA

FUJIKURA LTD

Optical fiber having a core with a repeatedly changing constitutional parameter

Multi-port coupler, optical amplifier, and fiber laser

Optical filter with planar optical waveguide having periodically varied distribution of refractive index and production process thereof

Optical fiber filter

Solution doping of a silica preform with erbium, aluminum and phosphorus to form an optical fiber

Optical waveguide grating and production method therefor

Optical pumping device, optical amplifier, fiber laser, and multicore fiber for optical pumping device

Optical fiber grating and manufacturing method thereof

Optical fiber grating and manufacturing method therefor

Erbium-doped silica optical fiber preform

Polarization maintaining optical fiber amplifier and optical amplifier

Gain tilt free optical fiber amplifier in a wide dynamic gain range

MINOLTA CO LTD

Electrophotographic image forming apparatus capable of setting image forming conditions and method for setting image forming conditions in an electrophotographic image forming apparatus

Image forming apparatus estimating a consumable life of a component using fuzzy logic

Light quantity correction method for exposing device, and image forming device

Image forming apparatus for optimizing toner transfer efficiency

Toner replenishment device for an image forming apparatus which employs pixel density and toner density information

Image forming apparatus having function for automatically adjusting image forming condition

Image forming apparatus

Electrophotographic image forming apparatus

Apparatus for measuring developer density

Image forming apparatus capable of obtaining stable transfer using a particular transfer roller

Image forming apparatus capable of estimating toner concentration

TOSHIBA KK

Text information analysis apparatus and method

Information filtering apparatus for selecting predetermined article from plural articles to present selected article to user, and method therefore

Information filtering apparatus and method for retrieving a selected article from information sources

Device and method for filtering information, device and method for monitoring updated document information and information storage medium used in same devices

Document retrieval system

Video viewing support system and method

SAKAI TETSUYA

Actuator available in controlled environment

Video playback apparatus and method

Image reader and image forming apparatus

Image forming apparatus, tone correction method using tone patches and alignment markers, and computer-readable recording medium recorded with a tone correction program using tone patches and alignment markers

Small slider unit

NIPPON THOMPSON CO LTD

Rotary table device

Multi-articulated manipulator

Small opening/closing slider

Actuator

Multi-articulated manipulator

HIRATA SPINNING

Pad

Adhesive sheet for substrate

Hand member and hand

Substrate conveyance arm

KONICA MINOLTA BUSINESS TECH

Method and device for estimating toner concentration and image forming apparatus equipped with such device

SHISEIDO CO LTD

External skin treatment composition

(unassigned)

Method of making an optical waveguide grating with two dissimilar irradiating steps

SONG YOUNG-IN

Question and answer forum techniques

NEC CORP

Polishing process for use in method of fabricating semiconductor device

HIROTA SOH

Image forming apparatus and tone correction method

KONICA MINOLTA INC

Image forming device, image printing method, and computer program of foil printing