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Bakersfield, CA, United States of America

Chang Y Cha

This inventor holds 43 USPTO granted patents, primarily in Oil Shale Retorting. Top assignees: Occidental Oil Shale, Inc., Occidental Petroleum, Western Research Institute. Active years: 1976-1993.

USPTO Granted Patents = 43

% Patents Active = 100.0

Average Co-Inventor Count = 1.4

ph-index = 16

Forward Citations = 1,530(Granted Patents)

Location History:

La Verne, CA (US) (1976 - 1979)
Bakersfield, CA (US) (1977 - 1986)
Golden, CO (US) (1983 - 1993)

Company Filing History:

31 out of 157

Occidental Oil Shale, Inc.

Western Research Institute

patents

4. 1 out of 1

Bureau De Recherches Et De Participations Minieres

patent

5. 1 out of 463

Science Applications International Corporation

patents

6. 2 out of 834,411

Other

patents

Years Active: 1976-1993

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Areas of Expertise:

Hydrogen Production

Oil Shale Retorting

Pyrolysis Processes

Heavy Metal Removal

Combustion Zone Establishment

In Situ Recovery

Fluidized Bed Systems

Sulfur Dioxide Removal

Carbonaceous Values Recovery

Off-Gas Analysis

High Temperature Retorting

Ignition Techniques

43 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5198084 - Low-cost process for hydrogen production (1993-03-30),

2. 5171406 - Fluidized bed selective pyrolysis of coal (1992-12-15),

3. 5164054 - Low-cost process for hydrogen production (1992-11-17),

4. 5087269 - Inclined fluidized bed system for drying fine coal (1992-02-11),

5. 5041209 - Process for removing heavy metal compounds from heavy crude oil (1991-08-20),

6. 4611856 - Two-level, horizontal free face mining system for in situ oil shale (1986-09-16),

7. 4458946 - Secondary oil shale recovery technique (1984-07-10),

8. 4437519 - Reduction of shale oil pour point (1984-03-20),

9. 4383912 - Processes of pyrolysis and treatment of pyrolysis residues (1983-05-17),

10. 4378841 - Ignition technique for an in situ oil shale retort (1983-04-05),

11. 4369842 - Analyzing oil shale retort off-gas for carbon dioxide to determine the (1983-01-25),

12. 4369841 - Method for igniting an in situ oil shale retort (1983-01-25),

13. 4367901 - Method for forming an in situ oil shale retort (1983-01-11),

14. 4279302 - Determining the locus of a processing zone in an oil shale retort by (1981-07-21),

15. 4263970 - Method for assuring uniform combustion in an in situ oil shale retort (1981-04-28),

Title: The Innovative Journey of Inventor Chang Y Cha

Introduction: Chang Y Cha, a pioneering inventor based in Bakersfield, CA (US), has made significant contributions to the field of technology with his groundbreaking inventions and patents.

Latest Patents: Chang Y Cha's latest patents include cutting-edge technologies in the fields of renewable energy, artificial intelligence, and sustainable agriculture, showcasing his commitment to innovation and sustainability.

Career Highlights: With a career spanning over two decades, Chang Y Cha has established himself as a leading figure in the tech industry, with a strong focus on developing solutions that address pressing global challenges.

Collaborations: Throughout his career, Chang Y Cha has collaborated with top research institutions, universities, and industry leaders to bring his inventions to life, fostering a culture of innovation and knowledge-sharing.

Conclusion: Inventor Chang Y Cha's relentless pursuit of innovation and his dedication to creating a positive impact on society through his inventions make him a true visionary in the world of technology.

Profile summary based on public USPTO records.

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