This inventor holds 20 USPTO granted patents and 2 EPO patents, primarily in Heat Exchanger Technology. Top assignees: Denso Corporation, Brother Kogyo Kabushiki-Kaisha, Toyota Jidosha Kabushiki Kaisha. Active years: 1991-2017.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Takayuki Hayashi. Retrieved from https://idiyas.com/inventor/takayuki-hayashi-ti2mdh41
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Calculating rank
% Patents Active = 70.0
EPO Patents = 2
Average Co-Inventor Count = 2.7
ph-index = 8
Forward Citations = 178(Granted Patents)
Location History:
- Nagakute-cho, JP (2000)
- Aichi-gun, JP (1998 - 2009)
- Anjo, JP (2009)
- Nagoya, JP (1991 - 2017)
Company Filing History:
12 out of 20,443 
Denso Corporation
5 out of 17,900 
Brother Kogyo Kabushiki-Kaisha
2 out of 39,010 
Toyota Jidosha Kabushiki Kaisha
4. 1 out of 2,064
Aisin Aw Co., Ltd.
5. 1 out of 26
Neomax Materials Co., Ltd.
6. 1 out of 1,600
Nippon Soken, Inc.
7. 1 out of 3,252
Nippondenso Co., Ltd.
8. 1 out of 5
Sankyo Radiator Co., Ltd.
where one patent can have more than one assignee
Years Active: 1991-2017
Loading Chart...
Loading Chart...
Areas of Expertise:
Exhaust Gas Heat Exchanger
Brazing Method
Heat Exchanger
Cooling Device
Hydraulic Control Apparatus
Internal Combustion Engine
Cooling System
Ultrasonically Joining
Paper Discharge Device
Sheet Supplying Device
Pressure Developing Device
Cooling Unit
20 patents (USPTO):Explore Patents
Hello! How may I assist you today?
Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
IDiyas Innovation Intelligence. (2026). Inventor Profile: Takayuki Hayashi. Retrieved from https://idiyas.com/inventor/takayuki-hayashi-ti2mdh41
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
2 patents (EPO):
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]