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For the Inventor, By the Inventor

Houston, TX, United States of America

Fred P Apffel

This inventor holds 12 USPTO granted patents. Top assignees: Flexivol, Inc., Intenco, Inc., Other. Active years: 1981-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Fred P Apffel. Retrieved from https://idiyas.com/inventor/fred-p-apffel

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

USPTO Granted Patents = 12

% Patents Active = 100.0

Average Co-Inventor Count = 1.1

ph-index = 10

Forward Citations = 473(Granted Patents)


Company Filing History:

goldMedal6 out of 6 
 
Flexivol, Inc.
 patents
silverMedal2 out of 2 
 
Intenco, Inc.
 patents
bronzeMedal4 out of 834,570 
Other
 patents

Years Active: 1981-1991

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12 patents (USPTO):Explore Patents
1. 5057189 - Recovery apparatus (1991-10-15),
2. 4861360 - Carbon dioxide absorption methanol process (1989-08-29),
3. 4839151 - Recovery process (1989-06-13),
4. 4767428 - Nitrogen removal system (1988-08-30),
5. 4738699 - Process for recovering ethane, propane and heavier hydrocarbons from a (1988-04-19),
6. 4675035 - Carbon dioxide absorption methanol process (1987-06-23),
7. 4647443 - Recovery process (1987-03-03),
8. 4597788 - Process for recovering ethane, propane and heavier hydrocarbons from a (1986-07-01),
9. 4584006 - Process for recovering propane and heavier hydrocarbons from a natural (1986-04-22),
10. 4456460 - Process for recovering ethane, propane and heavier hydrocarbons from a (1984-06-26),
11. 4284616 - Process for recovering carbon black and hydrocarbons from used tires (1981-08-18),
12. 4250158 - Process for recovering carbon black and hydrocarbons from used tires (1981-02-10),

Title: The Inventor Fred P Apffel: Pioneering Innovations in Houston

Introduction: Fred P Apffel is a distinguished inventor based in Houston, Texas, known for his groundbreaking contributions to various fields through his innovative creations and patents.

Latest Patents: Fred P Apffel holds several recent patents in the areas of biotechnology, renewable energy, and medical devices, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Fred P Apffel has established himself as a prominent figure in the innovation landscape, consistently pushing the boundaries of technology and science.

Collaborations: Throughout his career, Fred P Apffel has collaborated with leading research institutions, universities, and companies to bring his inventions to life, fostering a culture of creativity and progress in the industry.

Conclusion: Fred P Apffel's passion for innovation and his dedication to creating impactful solutions have solidified his reputation as a visionary inventor, shaping the future of technology and inspiring the next generation of inventors.

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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