Hiroshi YOSHINAGA

Person

Chiba, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Heating device, nip forming device, and image forming apparatus
- Patent number 12,135,517
- Issue date Nov 5, 2024
- Ricoh Company, Ltd.
- Masahiro Samei
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Heating device, fixing device, and image forming apparatus
- Patent number 12,124,194
- Issue date Oct 22, 2024
- Ricoh Company, Ltd.
- Ryohhei Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Heating device, fixing device, and image forming apparatus includin...
- Patent number 12,124,197
- Issue date Oct 22, 2024
- Ricoh Company, Ltd.
- Hiroshi Yoshinaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus including a filter for collect foreign subs...
- Patent number 12,117,768
- Issue date Oct 15, 2024
- Ricoh Company, Ltd.
- Takayuki Andoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Heating device, fixing device, and image forming apparatus
- Patent number 12,072,651
- Issue date Aug 27, 2024
- Ricoh Company, Ltd.
- Toshiyuki Kabata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Sheet conveying device, fixing device, and image forming apparatus
- Patent number 12,072,666
- Issue date Aug 27, 2024
- Ricoh Company, Ltd.
- Takahiro Imada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Heating device, fixing device, and image forming apparatus includin...
- Patent number 12,013,652
- Issue date Jun 18, 2024
- Ricoh Company, Ltd.
- Daisuke Inoue
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Heating device configured to limit a temperature rise of a lubrican...
- Patent number 11,959,039
- Issue date Apr 16, 2024
- Ricoh Company, Ltd.
- Takayuki Andoh
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Nip formation pad, heating device, fixing device, and image forming...
- Patent number 11,803,143
- Issue date Oct 31, 2023
- Ricoh Company, Ltd.
- Yoshiki Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Conveyance device, liquid discharge apparatus, and post-processing...
- Patent number 11,766,877
- Issue date Sep 26, 2023
- Ricoh Company, Ltd.
- Hiroshi Yoshinaga
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Nip former, fixing device, and image forming apparatus
- Patent number 11,681,250
- Issue date Jun 20, 2023
- Ricoh Company, Ltd.
- Toshiyuki Kabata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Heating device, fixing device, and image forming apparatus includin...
- Patent number 11,409,212
- Issue date Aug 9, 2022
- Ricoh Company, Ltd.
- Hiroshi Yoshinaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 11,353,812
- Issue date Jun 7, 2022
- Ricoh Company, Ltd.
- Takamasa Hase
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 11,099,509
- Issue date Aug 24, 2021
- Ricoh Company, Ltd.
- Ippei Fujimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 11,003,119
- Issue date May 11, 2021
- Ricoh Company, Ltd.
- Takamasa Hase
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device capable of enhancing durability of endless belt and i...
- Patent number 10,935,911
- Issue date Mar 2, 2021
- Ricoh Company, Ltd.
- Teppei Kawata
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 10,928,763
- Issue date Feb 23, 2021
- Ricoh Company, Ltd.
- Hiroyuki Shimada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus incorporating the same
- Patent number 10,809,652
- Issue date Oct 20, 2020
- Ricoh Company, Ltd.
- Hiroshi Yoshinaga
- G01 - MEASURING TESTING
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 10,571,837
- Issue date Feb 25, 2020
- Ricoh Company, Ltd.
- Yoshiki Yamaguchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 10,551,777
- Issue date Feb 4, 2020
- Ricoh Company, Ltd.
- Takamasa Hase
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus incorporating same
- Patent number 10,527,981
- Issue date Jan 7, 2020
- Ricoh Company, Ltd.
- Yutaka Naitoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device with nip former longer than opposed rotator
- Patent number 10,488,798
- Issue date Nov 26, 2019
- Ricoh Company, Ltd.
- Hiroshi Yoshinaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image forming apparatus and image forming method
- Patent number 10,331,062
- Issue date Jun 25, 2019
- Ricoh Company, Ltd.
- Hiroshi Yoshinaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus having a thermal conducti...
- Patent number 10,317,823
- Issue date Jun 11, 2019
- Ricoh Company, Ltd.
- Ippei Fujimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device including a pressure rotator and a thermal conduction...
- Patent number 10,295,939
- Issue date May 21, 2019
- Ricoh Company, Ltd.
- Hiroshi Yoshinaga
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 10,295,937
- Issue date May 21, 2019
- Ricoh Company, Ltd.
- Kazunari Sawada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus
- Patent number 10,289,037
- Issue date May 14, 2019
- Ricoh Company, Ltd.
- Takayuki Seki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device with nip formation pad having an abutment region and...
- Patent number 10,281,850
- Issue date May 7, 2019
- Ricoh Company, Ltd.
- Ryohei Matsuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device and image forming apparatus having nip pad including...
- Patent number 10,241,448
- Issue date Mar 26, 2019
- Ricoh Company, Ltd.
- Kazunari Sawada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Fixing device having a lateral end heater and image forming apparat...
- Patent number 10,222,732
- Issue date Mar 5, 2019
- Ricoh Company, Ltd.
- Takayuki Seki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20240385554
- Publication date Nov 21, 2024
- Ryohei MATSUDA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
- Publication number 20240361712
- Publication date Oct 31, 2024
- Hiroshi YOSHINAGA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20240361715
- Publication date Oct 31, 2024
- Yoshiki YAMAGUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20240319642
- Publication date Sep 26, 2024
- Masahiro SAMEI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20240319641
- Publication date Sep 26, 2024
- Takayuki ANDOH
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20240319640
- Publication date Sep 26, 2024
- Toshiyuki KABATA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING THE SAME
- Publication number 20240176265
- Publication date May 30, 2024
- Ryohei MATSUDA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20240176268
- Publication date May 30, 2024
- Hiroshi YOSHINAGA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20240036500
- Publication date Feb 1, 2024
- Masahiro SAMEI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20240004329
- Publication date Jan 4, 2024
- Hiroshi YOSHINAGA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SHEET CONVEYING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20230359142
- Publication date Nov 9, 2023
- Takahiro IMADA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20230350329
- Publication date Nov 2, 2023
- Toshiyuki KABATA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, NIP FORMING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20230324838
- Publication date Oct 12, 2023
- RICOH COMPANY, LTD.
- Masahiro SAMEI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20230305451
- Publication date Sep 28, 2023
- RICOH COMPANY, LTD.
- Ryohhei Sugiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20230297011
- Publication date Sep 21, 2023
- RICOH COMPANY, LTD.
- Kota SHIODERA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20230297015
- Publication date Sep 21, 2023
- RICOH COMPANY, LTD.
- Hiroshi YOSHINAGA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20230300269
- Publication date Sep 21, 2023
- RICOH COMPANY, LTD.
- Takayuki ANDOH
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20230297010
- Publication date Sep 21, 2023
- RICOH COMPANY, LTD.
- Daisuke INOUE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20230297026
- Publication date Sep 21, 2023
- RICOH COMPANY, LTD.
- Takayuki ANDOH
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
NIP FORMER, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20230093465
- Publication date Mar 23, 2023
- Toshiyuki KABATA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
NIP FORMATION PAD, HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING...
- Publication number 20220291613
- Publication date Sep 15, 2022
- Yoshiki YAMAGUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CONVEYANCE DEVICE, LIQUID DISCHARGE APPARATUS, AND POST-PROCESSING...
- Publication number 20220281234
- Publication date Sep 8, 2022
- Hiroshi YOSHINAGA
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS
- Publication number 20220026834
- Publication date Jan 27, 2022
- RICOH COMPANY, LTD.
- Hiroshi YOSHINAGA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE, IMAGE FORMING APPARATUS, FIXING METHOD, AND IMAGE FO...
- Publication number 20210311420
- Publication date Oct 7, 2021
- RICOH COMPANY, LTD.
- Hiroshi YOSHINAGA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20210223730
- Publication date Jul 22, 2021
- RICOH COMPANY, LTD.
- Takamasa HASE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20210191301
- Publication date Jun 24, 2021
- Ippei FUJIMOTO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20200341419
- Publication date Oct 29, 2020
- Hiroyuki SHIMADA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS
- Publication number 20200117126
- Publication date Apr 16, 2020
- RICOH COMPANY, LTD.
- Takamasa HASE
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING THE SAME
- Publication number 20200033776
- Publication date Jan 30, 2020
- Hiroshi YOSHINAGA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME
- Publication number 20190377286
- Publication date Dec 12, 2019
- Yutaka Naitoh
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Hiroshi YOSHINAGA

Person

Patents Grantslast 30 patents

Heating device, nip forming device, and image forming apparatus

Heating device, fixing device, and image forming apparatus

Heating device, fixing device, and image forming apparatus includin...

Image forming apparatus including a filter for collect foreign subs...

Heating device, fixing device, and image forming apparatus

Sheet conveying device, fixing device, and image forming apparatus

Heating device, fixing device, and image forming apparatus includin...

Heating device configured to limit a temperature rise of a lubrican...

Nip formation pad, heating device, fixing device, and image forming...

Conveyance device, liquid discharge apparatus, and post-processing...

Nip former, fixing device, and image forming apparatus

Heating device, fixing device, and image forming apparatus includin...

Fixing device and image forming apparatus

Fixing device and image forming apparatus

Fixing device and image forming apparatus

Fixing device capable of enhancing durability of endless belt and i...

Fixing device and image forming apparatus

Fixing device and image forming apparatus incorporating the same

Fixing device and image forming apparatus

Fixing device and image forming apparatus

Fixing device and image forming apparatus incorporating same

Fixing device with nip former longer than opposed rotator

Image forming apparatus and image forming method

Fixing device and image forming apparatus having a thermal conducti...

Fixing device including a pressure rotator and a thermal conduction...

Fixing device and image forming apparatus

Fixing device and image forming apparatus

Fixing device with nip formation pad having an abutment region and...

Fixing device and image forming apparatus having nip pad including...

Fixing device having a lateral end heater and image forming apparat...

Patents Applicationslast 30 patents

IMAGE FORMING APPARATUS

FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING THE SAME

FIXING DEVICE AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

SHEET CONVEYING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, NIP FORMING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

FIXING DEVICE AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

IMAGE FORMING APPARATUS

NIP FORMER, FIXING DEVICE, AND IMAGE FORMING APPARATUS

NIP FORMATION PAD, HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING...

CONVEYANCE DEVICE, LIQUID DISCHARGE APPARATUS, AND POST-PROCESSING...

HEATING DEVICE, FIXING DEVICE, AND IMAGE FORMING APPARATUS

FIXING DEVICE, IMAGE FORMING APPARATUS, FIXING METHOD, AND IMAGE FO...

FIXING DEVICE AND IMAGE FORMING APPARATUS

FIXING DEVICE AND IMAGE FORMING APPARATUS

FIXING DEVICE AND IMAGE FORMING APPARATUS

FIXING DEVICE AND IMAGE FORMING APPARATUS

FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING THE SAME

FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME