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For the Inventor, By the Inventor

Tokyo, Japan

Yasutaka Tochihara

This inventor holds 2 USPTO granted patents. Top assignee: Hoya Corporation. Active years: 2005-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yasutaka Tochihara. Retrieved from https://idiyas.com/inventor/yasutaka-tochihara

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 2

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 2

Forward Citations = 28(Granted Patents)


Company Filing History:

goldMedal2 out of 2,569 
 
Hoya Corporation
 patents

Years Active: 2005-2008

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2 patents (USPTO):Explore Patents
1. 7455785 - Method of determining a flatness of an electronic device substrate, method of producing the substrate, method of producing a mask blank, method of producing a transfer mask, polishing method, electronic device substrate, mask blank, transfer mask, and polishing apparatus (2008-11-25),
2. 6951502 - METHOD OF DETERMINING A FLATNESS OF AN ELECTRONIC DEVICE SUBSTRATE, METHOD OF PRODUCING THE SUBSTRATE, METHOD OF PRODUCING A MASK BLANK, METHOD OF PRODUCING A TRANSFER MASK, POLISHING METHOD, ELECTRONIC DEVICE SUBSTRATE, MASK BLANK, TRANSFER MASK, AND POLISHING APPARATUS (2005-10-04),

Title: Yasutaka Tochihara: Innovator in Electronic Device Substrates

Introduction

Yasutaka Tochihara is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of electronic device substrates, holding a total of 2 patents. His work focuses on methods that enhance the production and quality of electronic components.

Latest Patents

Tochihara's latest patents include innovative methods for determining the flatness of electronic device substrates. These methods involve predicting variations in flatness due to film stress from thin films formed on the substrate. The flatness is adjusted by measuring the substrate's flatness, selecting a load type based on this measurement, and polishing the substrate under a specified pressure distribution. His patents also cover the design of a polishing apparatus that includes a rotatable surface table, a polishing pad, and substrate pressing means with multiple pressing members for optimal surface contact.

Career Highlights

Yasutaka Tochihara is associated with Hoya Corporation, a leading company in the optical and electronic industries. His work has been instrumental in advancing the technology behind electronic device substrates, contributing to the efficiency and effectiveness of manufacturing processes.

Collaborations

Tochihara has collaborated with notable colleagues such as Kesahiro Koike and Masato Ohtsuka. Their combined expertise has furthered innovations in the field of electronic devices.

Conclusion

Yasutaka Tochihara's contributions to the field of electronic device substrates demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of the complexities involved in substrate production, paving the way for advancements in electronic technology.

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]
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