For the Inventor, By the Inventor

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Agoura Hills, CA, United States of America

Spatial Digital Systems, Inc.

USPTO Granted Patents = 97

% Expired Patents = 11.3

EPO Patents = 2

Forward Citations = 541

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13 inventors (with patents filed for the assignee):

Donald C D Chang (87 out of 169 patents)

Juo-Yu Lee (30 out of 33 patents)

Steve K Chen (22 out of 34 patents)

4. Tzer-Hso Lin (11 out of 13 patents)

5. Donald Chin-Dong Chang (7 out of 7 patents)

6. Yuanchang Liu (6 out of 8 patents)

7. Yulan Sun (4 out of 5 patents)

8. Eric Hu (3 out of 3 patents)

9. Michael T H Lin (3 out of 3 patents)

10. Donald Cd Chang (3 out of 4 patents)

11. Frank Lu (3 out of 4 patents)

12. Jeffrey Chijieh Chang (3 out of 3 patents)

13. Michael T S Lin (1 out of 1 patent)

Core Competencies:

Wavefront Multiplexing

Data Transport

MIMO Systems

Digital Beam Forming

Noise Injection

Satellite Communication

Cloud Data Storage

Multi-Channel Communication

Aerial Vehicles

Acoustic Quiet Zone

Resource Allocation

Portable Devices

97 patents: Sort by Forward Citations

1. 11914539 - Remote wiping for data transport, storage and retrieval (2024-02-27),

2. 11887575 - Generating acoustic quiet zone by noise injection techniques (2024-01-30),

3. 11831363 - MIMO systems with active scatters and their performance evaluation (2023-11-28),

4. 11782945 - Wavefront muxing and demuxing for cloud data storage and transport (2023-10-10),

5. 11770181 - Multibeam VSAT for cluster of slightly inclined GSO satellites (2023-09-26),

6. 11677725 - Enveloping for multilink communications (2023-06-13),

7. 11599492 - Remote wiping for data transport, storage and retrieval (2023-03-07),

8. 11552699 - Ground terminals via remote digital-beam-forming networks for satellites in non-geostationary orbit (2023-01-10),

9. 11381302 - Multibeam VSAT for cluster of slightly inclined GSO satellites (2022-07-05),

10. 11368195 - Active scattering for bandwith enhanced MIMO (2022-06-21),

11. 10911121 - Multi-user MIMO via active scattering platforms (2021-02-02),

12. 10904334 - Cloud data storage via cascaded K-muxing (2021-01-26),

13. 10903565 - Architectures and methods for novel antenna radiation optimization via feed repositioning (2021-01-26),

14. 10892819 - Multi-channel communications system using mobile airborne platforms (2021-01-12),

15. 10637605 - Composite data transport and storage via wavefront multiplexing (2020-04-28),

Company Overview

Spatial Digital Systems, Inc. is a technology company based in Agoura Hills, California, specializing in advanced wavefront multiplexing solutions. The organization focuses on developing innovative technologies for data transport, including MIMO systems and digital beam forming, which enhance communication efficiency and reliability. Their expertise extends to noise injection techniques and satellite communication, positioning them at the forefront of multi-channel communication and cloud data storage advancements.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

97 Patents

#1 in Agoura Hills, CA

#905 in California

#3,888 in US

#7,987 in the World

Agoura Hills, CA, United States of America

Spatial Digital Systems, Inc.

Forward Citations = 541

13 inventors:

Donald C D Chang (87 out of 169 patents)

Juo-Yu Lee (30 out of 33 patents)

Steve K Chen (22 out of 34 patents)

4. Tzer-Hso Lin (11 out of 13 patents)

5. Donald Chin-Dong Chang (7 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Spatial Digital Systems, Inc.. Retrieved from https://idiyas.com/company/spatial-digital-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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