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For the Inventor, By the Inventor

Lansdale, PA, United States of America

Donald R Kalvestrand

This inventor holds 4 USPTO granted patents. Top assignee: Unisys Corporation. Active years: 2000-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald R Kalvestrand. Retrieved from https://idiyas.com/inventor/donald-r-kalvestrand

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

Calculating rank
USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 5.3

ph-index = 4

Forward Citations = 147(Granted Patents)


Location History:

  • Lonsdale, PA (US) (2002)
  • Lansdale, PA (US) (2000 - 2003)

Company Filing History:

goldMedal4 out of 2,444 
 
Unisys Corporation
 patents

Years Active: 2000-2003

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4 patents (USPTO):Explore Patents
1. 6594785 - System and method for fault handling and recovery in a multi-processing system having hardware resources shared between multiple partitions (2003-07-15),
2. 6477620 - Cache-level return data by-pass system for a hierarchical memory (2002-11-05),
3. 6457101 - System and method for providing the speculative return of cached data within a hierarchical memory system (2002-09-24),
4. 6049845 - System and method for providing speculative arbitration for transferring (2000-04-11),

Title: Innovations of Donald R Kalvestrand

Introduction

Donald R Kalvestrand is a notable inventor based in Lonsdale, PA (US). He has made significant contributions to the field of multi-processing systems, holding a total of 4 patents. His work focuses on enhancing the efficiency and reliability of computing systems.

Latest Patents

Kalvestrand's latest patents include a system and method for fault handling and recovery in a multi-processing system. This innovation addresses the issue of isolating specific data owned by individual failing units in a shared memory area. It allows continuous processing by non-failing units, with a support processor managing non-immediate problems. Another notable patent is a cache-level return data by-pass system for a hierarchical memory. This system provides by-pass interfaces between storage devices, facilitating efficient data transfer without relying on main memory data interfaces.

Career Highlights

Kalvestrand has had a distinguished career at Unisys Corporation, where he has applied his expertise in developing advanced computing solutions. His work has significantly impacted the efficiency of multi-processing systems.

Collaborations

Some of his notable coworkers include Mitchell A Bauman and Roger Lee Gilbertson, who have collaborated with him on various projects.

Conclusion

Donald R Kalvestrand's contributions to the field of computing through his innovative patents demonstrate his commitment to advancing technology. His work continues to influence the development of more efficient and reliable multi-processing systems.

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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