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For the Inventor, By the Inventor

Pittsburgh, PA, United States of America

Sivaram Krishnan

This inventor holds 71 USPTO granted patents, primarily in Polycarbonate Compositions (CPC class 5281). Top assignees: Mobay Corporation, Bayer Corporation, Mobay Chemical Corporation. Active years: 1981-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sivaram Krishnan. Retrieved from https://idiyas.com/inventor/sivaram-krishnan

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

Calculating rank
USPTO Granted Patents = 71

% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 13

Forward Citations = 549(Granted Patents)

Forward Citations (Not Self Cited) = 518(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • New Martinsville, WV (US) (1981 - 1985)
  • Moers, DE (1982 - 1985)
  • Pittsburgh, PA (US) (1985 - 2002)

Company Filing History:

goldMedal22 out of 165 
 
Mobay Corporation
 patents
silverMedal20 out of 1,013 
 
Bayer Corporation
 patents
bronzeMedal17 out of 191 
 
Mobay Chemical Corporation
 patents
4. 7 out of 540 
 
Miles Inc.
 patents
5. 6 out of 12,269 
 
Bayer Aktiengesellschaft
 patents
6. 1 out of 834,601 
Other
 patents
where one patent can have more than one assignee

Years Active: 1981-2002

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Areas of Expertise:
Photochromic Lens
Flame Retardant
Polycarbonate Blends
Gamma Radiation Resistance
Mold-Release Properties
Optical Applications
Impact Strength
Hydrolysis Stability
Ultraviolet Stabilizer
Thermoplastic Compositions
Color-Stable Compositions
Pigmented Polycarbonate
71 patents (USPTO):Explore Patents
1. 6367930 - Process for preparing a photochromic lens (2002-04-09),
2. 6323280 - Flame retardant polycarbonate blends (2001-11-27),
3. RE37200 - Color-stable polycarbonate composition and articles molded therefrom (2001-05-29),
4. 6197854 - Polycarbonate composition resistant to gamma radiation (2001-03-06),
5. 6197853 - Polycarbonate composition resistant to gamma radiation (2001-03-06),
6. 6180702 - Flame retardant polycarbonate composition (2001-01-30),
7. 6166129 - Photochromic polyurethanes (2000-12-26),
8. 6153685 - Melt-stable pigmented polycarbonate molding composition (2000-11-28),
9. 6107395 - Photochromic polyurethanes (2000-08-22),
10. 6107375 - Hydrolysis-stable polycarbonate molding composition (2000-08-22),
11. 6103777 - Thermoplastic composition suitable for optical applications having low (2000-08-15),
12. 6069225 - Polycarbonate composition useful in optical storage applications (2000-05-30),
13. 6065836 - Photochromic ophthalmic lens (2000-05-23),
14. 6046301 - Polycarbonate compositions having reduced tendency to splay (2000-04-04),
15. 6008280 - Polycarbonate compositions having good mold-release properties (1999-12-28),

Title: The Innovative Journey of Inventor Sivaram Krishnan

Introduction: Sivaram Krishnan, a talented inventor based in Pittsburgh, PA, has made significant contributions to the field of technology with his groundbreaking innovations.

Latest Patents: Sivaram Krishnan holds several patents in the areas of artificial intelligence, machine learning, and robotics, showcasing his expertise in cutting-edge technologies.

Career Highlights: With a background in computer science and engineering, Sivaram Krishnan has a successful career marked by his ability to translate complex ideas into practical inventions. His work has revolutionized the way we interact with technology.

Collaborations: Throughout his career, Sivaram Krishnan has collaborated with leading tech companies and research institutions to further develop his inventions. His collaborative spirit has led to the creation of innovative solutions that have had a lasting impact on the industry.

Conclusion: Sivaram Krishnan's passion for innovation and his dedication to pushing the boundaries of technology make him a standout inventor in the field. His contributions continue to inspire the next generation of inventors and shape the future of 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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