Sadaaki Nakaoka

This inventor holds 9 USPTO granted patents. Top assignees: Fuji Photo Film Company, Limited, Daikin Industries, Ltd.. Active years: 1986-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sadaaki Nakaoka. Retrieved from https://idiyas.com/inventor/sadaaki-nakaoka

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 4

Forward Citations = 218(Granted Patents)

Location History:

Nishinomiya, JP (1986)
Hyogo, JP (1988)
Osaka, JP (1986 - 1994)

Company Filing History:

7 out of 16,458

Fuji Photo Film Company, Limited

patents

2 out of 4,492

Daikin Industries, Ltd.

patents

Years Active: 1986-1994

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5320734 - Test apparatus for measuring concentration of test substance in liquid (1994-06-14),

2. 5228972 - Apparatus for measuring concentration of test substance in liquid (1993-07-20),

3. 4788576 - Microfilm duplicating apparatus (1988-11-29),

4. 4785333 - Blip marking recorder in a microfilm duplicating apparatus (1988-11-15),

5. 4760425 - Developer supply apparatus for electrophotographic system (1988-07-26),

6. 4733279 - Microfilming camera (1988-03-22),

7. 4640597 - Micro-reader (1987-02-03),

8. 4629299 - Microform-reader (1986-12-16),

9. 4619519 - Electrophotographic camera processor-reader (1986-10-28),

Title: Sadaaki Nakaoka: Innovator in Measurement Technology

Introduction

Sadaaki Nakaoka is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of measurement technology, particularly in the development of innovative test apparatuses for measuring the concentration of substances in liquids. With a total of 9 patents to his name, Nakaoka's work has advanced the capabilities of concentration measurement in various applications.

Latest Patents

Nakaoka's latest patents include a test apparatus designed for measuring the concentration of a test substance in liquid. This apparatus features a thin sheet with multiple through holes and diffusion-limiting membranes that cover the corresponding holes. The design allows for the movement of the thin sheet, which facilitates the measurement process. Another notable patent is an apparatus that utilizes a disk-shaped thin plate or a long-sized thin plate housed in a casing. This casing is equipped with openings for the penetration of the test substance and includes diffusion-limiting membranes. A driving mechanism is also integrated to move the thin plate, enabling multiple measurements of concentration to be conducted efficiently.

Career Highlights

Throughout his career, Sadaaki Nakaoka has worked with notable companies such as Fuji Photo Film Company, Limited and Daikin Industries, Ltd. His experience in these organizations has contributed to his expertise in measurement technology and innovation.

Collaborations

Nakaoka has collaborated with several professionals in his field, including Takeshi Okano and Tatsuhiko Osaka. These collaborations have likely enriched his work and led to further advancements in his inventions.

Conclusion

Sadaaki Nakaoka's contributions to measurement technology through his innovative patents and collaborations highlight his role as a significant inventor in the industry. His work continues to influence the field and improve the accuracy of concentration measurements in various applications.

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]