Takao Hiraoka

This inventor holds 49 USPTO granted patents and 4 published patent applications, plus 9 CIPO patents and 16 EPO patents, primarily in Photopolymerizable Inks. Top assignees: Ricoh Company, Ltd., Nichiban Company Limited, Senju USA, Inc.. Active years: 2014-2023.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takao Hiraoka. Retrieved from https://idiyas.com/inventor/takao-hiraoka

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

USPTO Granted Patents = 49 (Patent Applications = 4)

% Patents Active = 75.5

CIPO Patents = 9 (Patent Applications = 2)

EPO Patents = 16 (Patent Applications = 19)

Average Co-Inventor Count = 1.5

ph-index = 8

Forward Citations = 171(Granted Patents)

Location History:

Aichi, JP (2015)
Bunkyo-ku, JP (2014 - 2016)
Ohta-ku, JP (2016)
Tokyo, JP (2015 - 2022)
Kanagawa, JP (2014 - 2023)

Company Filing History:

Nichiban Company Limited

where one patent can have more than one assignee

Years Active: 2014-2023

Loading Chart...

Areas of Expertise:

Photopolymerizable Ink

Ink Cartridge

Cured Product

Image Forming Device

Active Energy Ray

Inkjet Printer

Curable Composition

Therapeutic Patch

Transdermal Patch

Radical Polymerizable

Composition Container

Ink Discharging Device

49 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11629262 - Liquid composition set, cured product forming method, and liquid composition (2023-04-18),

2. 11311423 - Facial patch (2022-04-26),

3. 11299641 - Curable liquid composition, composition-accommodating container, liquid composition discharging device, cured material, and method of manufacturing cured material (2022-04-12),

4. 10995226 - Active-energy-ray-curable composition, active-energy-ray-curable ink composition, composition stored container, two-dimensional or three-dimensional image forming apparatus, method for forming two-dimensional or three-dimensional image, cured product, and laminated cured product (2021-05-04),

5. 10829631 - Composition, accommodating unit, image forming device, and image forming method (2020-11-10),

6. 10829575 - Photopolymerizable composition, photopolymerizable ink, composition container, image or cured product forming method, image or cured product forming device, and image or cured product (2020-11-10),

7. 10793735 - Curable composition, curable ink, storing container, two-dimensional or three-dimensional image forming device, two-dimensional or three-dimensional image forming method, cured product, printed matter, and adhesive label (2020-10-06),

8. 10562311 - Photopolymerizable inkjet ink (2020-02-18),

9. 10414150 - Active-energy-ray-curable composition, composition stored container, two-dimensional or three-dimensional image forming apparatus, method for forming two-dimensional or three-dimensional image, and cured product (2019-09-17),

10. 10259226 - Photopolymerizable inkjet ink (2019-04-16),

11. 10227497 - Active energy ray curable composition, active energy ray curable ink, inkjet ink, stereoscopic modeling material, active energy ray curable composition container, two-dimensional or three dimensional image forming apparatus, two-dimensional or three-dimensional image forming method, cured product, and processed product (2019-03-12),

12. 9988478 - Photopolymerizable composition, photopolymerizable ink jet ink, and ink cartridge (2018-06-05),

13. 9802413 - Photopolymerizable inkjet ink (2017-10-31),

14. 9777095 - Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge (2017-10-03),

15. 9758683 - Photopolymerizable composition, photopolymerizable inkjet ink, and ink cartridge (2017-09-12),

Title: Innovations of Takao Hiraoka: A Pioneer in Liquid Composition Technologies

Introduction: Takao Hiraoka is an esteemed inventor based in Kanagawa, Japan, known for his profound contributions to the field of liquid compositions. With a remarkable total of 43 patents, Hiraoka has significantly impacted various industries through his innovative inventions.

Latest Patents: Among Hiraoka's latest patents are groundbreaking developments in liquid composition sets and related methods. One notable patent details a liquid composition set that includes a first and second liquid composition. The first comprises a compound represented by a specific formula that involves functional groups and an acidic substance. The second liquid composition contains compounds with vinyl or acryloyl groups, showcasing Hiraoka's expertise in chemical formulations. Another noteworthy patent describes a curable liquid composition characterized by a low skin sensitization profile, suitable for various applications. This composition comprises a monomer with a specific SI value and a photopolymerization initiator with a high molecular weight, further reflecting Hiraoka’s innovative spirit.

Career Highlights: Employed by Ricoh Company, Ltd., Takao Hiraoka has made significant strides in research and development, specializing in advanced materials. His work continues to push the boundaries of what is possible with liquid compositions, particularly in developing applications that prioritize safety and efficacy.

Collaborations: Throughout his career, Hiraoka has collaborated with notable coworkers, including Tsutomu Maekawa and Tomoko Hasegawa. These partnerships have fostered a dynamic environment for innovation and have led to several successful patented technologies.

Conclusion: Takao Hiraoka’s contributions to the field of liquid compositions underscore his role as a leading inventor in Japan. His extensive patent portfolio reflects a commitment to innovation and excellence, positioning him as an influential figure in the industry. As the landscape of material science continues to evolve, Hiraoka's work remains at the forefront, paving the way for future advancements.

Profile summary based on public USPTO records.