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% Expired Patents = 20.0

Forward Citations = 71

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11 inventors (with patents filed for the assignee):

Mark H Helmick (7 out of 10 patents)

William J Gervais (4 out of 9 patents)

William J Lurie (3 out of 3 patents)

4. William R Brennan, Jr (1 out of 20 patents)

5. William H Vermeer (1 out of 3 patents)

6. Thomas J Studebaker (1 out of 10 patents)

7. Chad A Follmar (1 out of 1 patent)

8. Everette C Van Wert (1 out of 2 patents)

9. John R Cogley, Jr (1 out of 1 patent)

10. Richard A Nelson (1 out of 1 patent)

11. William J Lurie, Jr (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. D692426 - Touchless pointing device (2013-10-29),

2. D649152 - Touchless pointing device (2011-11-22),

3. 7181313 - Scalable composite rectangular/cylindrical automated data storage library system (2007-02-20),

4. 6762905 - High density tape library system (2004-07-13),

5. 6560061 - High density tape library system (2003-05-06),

6. 6381089 - Tape cassette storage and accessing system with closely spaced layered cassettes (2002-04-30),

7. 6271982 - Automated precision cassette handling system (2001-08-07),

8. D392147 - Simplified tape cartridge rack (1998-03-17),

9. 5014141 - Low profile, high-capacity streaming tape drive (1991-05-07),

10. 4893312 - Compact, real time tape drive system (1990-01-09),

Qualstar Corporation is a leading provider of data storage solutions and power supplies. They offer reliable and efficient products such as tape libraries, automated storage systems, and power supplies for a variety of industries. With over 30 years of experience, Qualstar is known for their innovative technology and commitment to customer satisfaction.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

10 Patents

#11 in Simi Valley, CA

#7,090 in California

#29,779 in US

#55,869 in the World

Simi Valley, CA, United States of America

Qualstar Corporation