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For the Inventor, By the Inventor

Billerica, MA, United States of America

Bull Hn Information Systems, Inc.

Calculating rank
USPTO Granted Patents = 302

% Expired Patents = 0.33



Forward Citations = 10,246

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289 inventors (with patents filed for the assignee):

goldMedal George J Barlow (22 out of 46 patents)

silverMedal Russell Wayne Guenthner (21 out of 38 patents)

bronzeMedal James W Keeley (20 out of 35 patents)

4.  Charles P Ryan (19 out of 33 patents)

5.  William A Shelly (19 out of 35 patents)

6.  Richard A Lemay (18 out of 46 patents)

7.  David A Egolf (16 out of 16 patents)

8.  Ronald E Lange (12 out of 21 patents)

9.  Wayne R Buzby (11 out of 11 patents)

10.  Thomas F Joyce (11 out of 43 patents)

11.  Bruce A Noyes (10 out of 10 patents)

12.  Thomas S Hirsch (10 out of 15 patents)

13.  Clinton B Eckard (9 out of 15 patents)

14.  Jian-Kuo Shen (8 out of 29 patents)

15.  Chester M Nibby, Jr (8 out of 15 patents)


Core Competencies:
Fault Tolerance
Multiprocessor Emulation
Virtual Memory Management
High Performance Computing
Database Optimization
Cache Management
Dynamic Code Translation
Transaction Processing
Software Configuration
Memory Architecture
Performance Metrics
Signal Processing

302 patents:

1. 10366299 - Sorting/scanning system camera upgrade apparatus with backwards compatibility (2019-07-30),
2. 9754222 - Method for summarized viewing of large numbers of performance metrics while retaining cognizance of potentially significant deviations (2017-09-05),
3. 8869126 - Method and apparatus enabling multi threaded program execution for a Cobol program including OpenMP directives by utilizing a two-stage compilation process (2014-10-21),
4. 8856759 - Method and apparatus providing COBOL decimal type arithmetic functions with improved performance (2014-10-07),
5. 7684973 - Performance improvement for software emulation of central processor unit utilizing signal handler (2010-03-23),
6. 7406406 - Instructions to load and store containing words in a computer system emulator with host word size larger than that of emulated machine (2008-07-29),
7. 7314491 - Encapsulation of large native operating system functions as enhancements of the instruction set in an emulated central processor system (2008-01-01),
8. 7219253 - Process for providing submodel performance in a computer processing unit (2007-05-15),
9. 7082551 - Method and data processing system providing checkpoint/restart across multiple heterogeneous computer systems (2006-07-25),
10. 7024467 - Method and data processing system providing file I/O across multiple heterogeneous computer systems (2006-04-04),
11. 6983429 - Formal proof methods for analyzing circuit loading problems under operating conditions (2006-01-03),
12. 6973539 - Multiprocessor write-into-cache system incorporating efficient access to a plurality of gatewords (2005-12-06),
13. 6970977 - Equal access to prevent gateword dominance in a multiprocessor write-into-cache environment (2005-11-29),
14. 6938145 - Associative memory system with a multi-digit incrementable validity counter (2005-08-30),
15. 6922666 - Method and data processing system for performing atomic multiple word reads (2005-07-26),
Company Overview
Bull Hn Information Systems, Inc., based in Billerica, MA, specializes in advanced data processing systems that enhance computational efficiency and reliability. The company focuses on core technologies such as fault tolerance, multiprocessor emulation, and virtual memory management, catering to high-performance computing needs. Their expertise extends to database optimization, cache management, dynamic code translation, and transaction processing, positioning them as a key player in the development of robust and scalable computing solutions.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Bull Hn Information Systems, Inc. USPTO Patent Assignee Logo
302 Patents

#4 in Billerica, MA

#82 in Massachusetts

#1,454 in US

#2,969 in the World

Billerica, MA (US)
Billerica, MA, United States of America

Bull Hn Information Systems, Inc.

Forward Citations = 10,246

289 inventors:

goldMedal George J Barlow (22 out of 46 patents)

silverMedal Russell Wayne Guenthner (21 out of 38 patents)

bronzeMedal James W Keeley (20 out of 35 patents)

4.  Charles P Ryan (19 out of 33 patents)

5.  William A Shelly (19 out of 35 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Bull Hn Information Systems, Inc.. Retrieved from https://idiyas.com/company/bull-hn-information-systems

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

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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