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Heidelberg, Germany

Grau Gmbh

USPTO Granted Patents = 22

Trademarks = 4

Forward Citations = 181

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17 inventors (with patents filed for the assignee):

Roland Blanz (5 out of 10 patents)

William S Broome (5 out of 8 patents)

Dieter Stockel (4 out of 9 patents)

4. Colin F Ross (2 out of 4 patents)

5. Hans-Jurgen Oberg (2 out of 2 patents)

6. Friedrich E Schneider (1 out of 9 patents)

7. Jercy Sulzyc (1 out of 1 patent)

8. Raymond S Porter (1 out of 1 patent)

9. Robert D Prescott (1 out of 2 patents)

10. Jerzy Sulzyc (1 out of 1 patent)

11. Horst Venghaus (1 out of 1 patent)

12. George Sulzyc (1 out of 1 patent)

13. Georg Sulzyc (1 out of 1 patent)

14. Heinz Spengler (1 out of 2 patents)

15. Hermann Heiss (1 out of 1 patent)

22 patents: Sort by Forward Citations

1. 6041808 - Compressed air control device for a source of compressed air on motor (2000-03-28),

2. 5871217 - Levelling valve for automatically keeping constant the vehicle height of (1999-02-16),

3. 5730428 - Leveling valve having a precision adjustment device (1998-03-24),

4. 5678900 - Unloader for a source of air under pressure on vehicles (1997-10-21),

5. 5615929 - Brake system for a vehicle train (1997-04-01),

6. 5551734 - Connection assembly for the connection of a pipe to a plastic housing (1996-09-03),

7. 5549362 - Braking systems (1996-08-27),

8. 5477089 - Automotive electronic control systems (1995-12-19),

9. 5443306 - Electrohydraulic brake control system (1995-08-22),

10. 5421644 - Vehicle braking system (1995-06-06),

11. 5395164 - Operating brake valve for an electrically and pneumatically actuated (1995-03-07),

12. 5372413 - Multi-channel vehicle braking system with multiple supply valves and (1994-12-13),

13. 5277485 - Vehicle braking system (1994-01-11),

14. 5203375 - Leveling valve (1993-04-20),

15. 5176404 - Level control valve for automatically keeping constant the vehicle (1993-01-05),

Company Overview

Grau GmbH, based in Heidelberg, Germany, specializes in the development and manufacturing of advanced software solutions and hardware for data management and processing. The company focuses on providing innovative technologies that enhance data integrity and security, catering to various industries including healthcare, automotive, and telecommunications. Grau GmbH is recognized for its commitment to quality and precision, ensuring that its products meet the evolving needs of its clients in a rapidly changing technological landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

22 Patents

#18 in Heidelberg

#2,063 in Germany

#28,782 in the World

Heidelberg, Germany

Grau Gmbh

Forward Citations = 181

17 inventors:

Roland Blanz (5 out of 10 patents)

William S Broome (5 out of 8 patents)

Dieter Stockel (4 out of 9 patents)

4. Colin F Ross (2 out of 4 patents)

5. Hans-Jurgen Oberg (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Grau Gmbh. Retrieved from https://idiyas.com/company/grau

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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