% Expired Patents = 100.0

Forward Citations = 76

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2 inventors (with patents filed for the assignee):

Jeffrey Michael Alexander (4 out of 11 patents)

Erich T Griebling (2 out of 2 patents)

4 patents: Sort by Forward Citations

1. 8108177 - Hang timer for determining time of flight of an object (2012-01-31),

2. 7650257 - Enhanced hang-timer for console simulation (2010-01-19),

3. 7617069 - Hang-timer for providing recording instructions (2009-11-10),

4. 7379842 - Hang timer for determining time of flight of an object (2008-05-27),

Company Overview

Drop Zone Inc. is a leading provider of skydiving equipment, services, and training. With a focus on safety and innovation, we strive to bring the thrill of skydiving to enthusiasts of all levels. Whether you're a first-time jumper or an experienced skydiver, Drop Zone Inc. has everything you need to take your passion to new heights.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#3 in North Bend, WA

#1,464 in Washington

#60,671 in US

North Bend, WA, United States of America

Drop Zone Inc.

Forward Citations = 76

2 inventors:

Jeffrey Michael Alexander (4 out of 11 patents)

Erich T Griebling (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Drop Zone Inc.. Retrieved from https://idiyas.com/company/drop-zone

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]