% Expired Patents = 10.0

CIPO Patents = 1

Forward Citations = 803

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6 inventors (with patents filed for the assignee):

S Joseph Campanella (6 out of 16 patents)

Dharmendra Kumar Sachdev (2 out of 2 patents)

Martine A Rothblatt (1 out of 12 patents)

4. Max Heinrich Hegendoerfer (1 out of 1 patent)

5. G Christopher Harris (1 out of 1 patent)

6. Robert L Johnstone (1 out of 1 patent)

10 patents: Sort by Forward Citations

1. 7031272 - Satellite direct radio broadcast system (2006-04-18),

2. 6956814 - Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system (2005-10-18),

3. 6574338 - Information delivery system and method (2003-06-03),

4. 6542480 - Satellite payload processing system using polyphase demultiplexing, quadrature phase shift keying demodulation and rate alignment (2003-04-01),

5. 6333922 - Satellite payload processing system for switching uplink signals to time division multiplexed downlink signals (2001-12-25),

6. 6326922 - Yagi antenna coupled with a low noise amplifier on the same printed circuit board (2001-12-04),

7. 6115366 - System for managing space segment usage among broadcast service providers (2000-09-05),

8. 6105060 - System for providing global portable internet access using low earth (2000-08-15),

9. 5966442 - Real-time information delivery system for aircraft (1999-10-12),

10. 5898680 - System for providing location-specific data to a user (1999-04-27),

Company Overview

Worldspace Corporation, headquartered in Silver Spring, MD, specializes in satellite-based digital audio broadcasting. The company focuses on delivering high-quality audio content through innovative satellite technology, catering to a diverse audience across various regions. With a commitment to enhancing the listening experience, Worldspace integrates advanced broadcasting techniques and digital signal processing to provide a wide range of programming options, including music, news, and entertainment, ensuring accessibility and reliability for its users.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

10 Patents

#12 in Silver Spring, MD

#417 in Maryland

#29,839 in US

#55,986 in the World

Silver Spring, MD, United States of America

Worldspace Corporation

Forward Citations = 803

6 inventors:

S Joseph Campanella (6 out of 16 patents)

Dharmendra Kumar Sachdev (2 out of 2 patents)

Martine A Rothblatt (1 out of 12 patents)

4. Max Heinrich Hegendoerfer (1 out of 1 patent)

5. G Christopher Harris (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Worldspace Corporation. Retrieved from https://idiyas.com/company/worldspace

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]

1 patent (CIPO):

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]