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Boulder, CO, United States of America

Dphi Acquisitions, Inc.

USPTO Granted Patents = 109

% Expired Patents = 64.2

Forward Citations = 844

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45 inventors (with patents filed for the assignee):

Ron Kadlec (51 out of 60 patents)

Charles R Watt (40 out of 46 patents)

Christopher J Turner (39 out of 39 patents)

4. Hans Brandon Wach (18 out of 62 patents)

5. Robert David Freeman (12 out of 14 patents)

6. David Blankenbeckler (11 out of 25 patents)

7. Lane W Lee (11 out of 18 patents)

8. Thomas Edward Berg (10 out of 42 patents)

9. Ian Russell Redmond (9 out of 17 patents)

10. Michael F Braitberg (8 out of 19 patents)

11. Bernard W Bell (8 out of 13 patents)

12. David Davies (8 out of 11 patents)

13. Brian Medower (7 out of 8 patents)

14. Peter Jeffrey Raymond (6 out of 8 patents)

15. David William Niss (5 out of 12 patents)

Core Competencies:

Optical Disk Drive

Digital Servo System

Calibration Techniques

Secure Access Method

Focus Servo System

Tracking Servo System

Data Storage Device

Optical Media

Error Correction

Multi-Track Seek

Performance Recovery

Content Security

109 patents: Sort by Forward Citations

1. 7958377 - Secure access system and method (2011-06-07),

2. 7914711 - Use of mother stamper for optical disk molding (2011-03-29),

3. 7913270 - First surface removable optical disc within a cartridge (2011-03-22),

4. 7839729 - Optical drive servo with a servo processor receiving photodetector signals (2010-11-23),

5. 7808880 - Optical disk drive with hybrid solid immersion objective lens (2010-10-05),

6. 7808879 - Optical disk drive with micro-SIL (2010-10-05),

7. 7782721 - Digital focus and tracking servo system with multi-zone calibration (2010-08-24),

8. 7729495 - System and method for detecting unauthorized copying of encrypted data (2010-06-01),

9. 7680004 - Digital servo system with inverse non-linearity compensation (2010-03-16),

10. 7675835 - Small form-factor optical data storage device (2010-03-09),

11. 7672903 - Revocation method and apparatus for secure content (2010-03-02),

12. 7672199 - Close focus algorithm in a digital focus servo system (2010-03-02),

13. 7593300 - Digital tracking servo system with off-format detection (2009-09-22),

14. 7554898 - Dual density disc with associated properties (2009-06-30),

15. 7549044 - Block-level storage device with content security (2009-06-16),

Dphi Acquisitions, Inc., based in Boulder, Colorado, specializes in the development and manufacturing of advanced optical data storage technologies. The company focuses on key areas such as optical disk drives, digital servo systems, and calibration techniques, which are essential for enhancing data storage efficiency and reliability. Their innovations also encompass secure access methods and various servo systems, including focus and tracking, aimed at optimizing the performance of data storage devices and optical media.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

109 Patents

#12 in Boulder, CO

#70 in Colorado

#3,498 in US

#7,213 in the World

Boulder, CO, United States of America

Dphi Acquisitions, Inc.

Forward Citations = 844

45 inventors:

Ron Kadlec (51 out of 60 patents)

Charles R Watt (40 out of 46 patents)

Christopher J Turner (39 out of 39 patents)

4. Hans Brandon Wach (18 out of 62 patents)

5. Robert David Freeman (12 out of 14 patents)

Please report any incorrect information to [email protected]

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