Austin, TX, United States of America

Sheldon Bernard Levenstein

USPTO Granted Patents = 52 

Average Co-Inventor Count = 3.1

ph-index = 14

Forward Citations = 809(Granted Patents)

DiyaCoin DiyaCoin 1.94 


Inventors with similar research interests:


Location History:

  • Rochester, MN (US) (1992 - 2003)
  • Austin, TX (US) (2003 - 2023)

Company Filing History:


Years Active: 1992-2023

where 'Filed Patents' based on already Granted Patents

52 patents (USPTO):

Title: An Insight into Sheldon Bernard Levenstein: Innovator in Computer Processor Technology

Introduction: Sheldon Bernard Levenstein is a prolific inventor based in Austin, TX, renowned for his contributions to computer architecture and processing technologies. With an impressive portfolio of 52 patents, Levenstein has made significant strides in enhancing the efficiency and performance of microprocessors.

Latest Patents: Among his latest innovations, Levenstein has developed a microprocessor that fuses load and compare instructions. This technology allows for the merging of load instructions and compare-immediate instructions in a computer processor, particularly within a load-store architecture. The advancement facilitates efficient data transfer between memory and processor registers, particularly when the relevant instructions are consecutive and meet specific criteria concerning their respective fields.

Another notable patent focuses on sharing instruction cache lines between multiple threads. This technology proposes methods for optimizing instruction cache usage by employing set/way pointers and maintaining a tracking table for shared pages. By deriving pointers from system memory addresses associated with instruction fetches, Levenstein's innovation allows for detecting matches and effectively updating the instruction cache to signify that certain lines are shared among various threads.

Career Highlights: As a key member of the International Business Machines Corporation (IBM), Sheldon Levenstein has dedicated his career to advancing computing technology. His body of work reflects a deep understanding of processor architectures and their impact on computational efficiency. His inventive strategies contribute not just to IBM but significantly shape the broader landscape of computer technology.

Collaborations: Sheldon Levenstein has collaborated with esteemed colleagues David S. Levitan and Brian William Thompto, among others, during his tenure. Their collective efforts in research and development highlight the innovative spirit within IBM, echoing a commitment to excellence in technology.

Conclusion: Sheldon Bernard Levenstein stands out as a pivotal figure in the realm of innovations in computer processors. His 52 patents reflect a dedication to pushing the boundaries of technology, particularly through advancements that improve the efficiency of computing processes. With ongoing contributions at IBM, his legacy continues to unfold, inspiring future generations of inventors and innovators in the field.

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