Hisatoshi HAYAKAWA

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TOKYO, JP

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Patents Grantslast 30 patents

Information Patent Grant
Friction body unit and thermochromic writing instrument
- Patent number 12,179,510
- Issue date Dec 31, 2024
- Kabushiki Kaisha Pilot Corporation
- Hisatoshi Hayakawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Retractable writing implement
- Patent number 12,097,723
- Issue date Sep 24, 2024
- Kabushiki Kaisha Pilot Corporation
- Hisatoshi Hayakawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Retractable writing instrument
- Patent number 11,912,058
- Issue date Feb 27, 2024
- Kabushiki Kaisha Pilot Corporation
- Hisatoshi Hayakawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing tool
- Patent number 11,667,146
- Issue date Jun 6, 2023
- Kabushiki Kaisha Pilot Corporation
- Hisatoshi Hayakawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Knock type writing tool
- Patent number 11,396,203
- Issue date Jul 26, 2022
- Kabushiki Kaisha Pilot Corporation
- Hisatoshi Hayakawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
Friction Body Unit and Thermochromic Writing Instrument
- Publication number 20240149605
- Publication date May 9, 2024
- Kabushiki Kaisha Pilot Corporation (Also Trading as Pilot Corporation)
- Hisatoshi Hayakawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Retractable Writing Implement
- Publication number 20220219482
- Publication date Jul 14, 2022
- Kabushiki Kaisha Pilot Corporation (Also Trading as Pilot Corporation)
- Hisatoshi Hayakawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Retractable Writing Instrument
- Publication number 20220072894
- Publication date Mar 10, 2022
- Kabushiki Kaisha Pilot Corporation (Also Trading as Pilot Corporation)
- Hisatoshi Hayakawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
KNOCK TYPE WRITING TOOL
- Publication number 20220009271
- Publication date Jan 13, 2022
- KABUSHIKI KAISHA PILOT CORPORATION also tradings as PILOT CORPORATION
- HISATOSHI HAYAKAWA
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
WRITING TOOL
- Publication number 20210252903
- Publication date Aug 19, 2021
- Kabushiki Kaisha Pilot Corporation (Also Trading as Pilot Corporation)
- Hisatoshi HAYAKAWA
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES