Patents for sale or license
To learn more, please scroll down to see all technologies and click on an icon or link:
Multi-Mode Weapon
- Fires Non-Lethal and Lethal rounds.
- Records which ammunition type was fired, and in what sequence.
- Instantly switches from Non-lethal to Lethal.

Royalty-Free to First Licensed Manufacturer
US Patent: 9,921,018
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Safe-Texting
Track or Disable Driver Texting
- Not voluntary
- Passengers can text
- No phone mods, No vehicle mods, No hardware infrastructure mods
Visit Safetexting.org
License or Sale
6 US Patents and
2 British Patents
View all patents here.
Implemented by wireless carriers with government cooperation to reduce accidents, injuries, and deaths.
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Speed-Sensitive Secure Entrance
Protect our Soft Targets!
License or Sale
Visit Barbecan.com
6 US Patents and
1 British Patent
View all patents here.
Subways, Hotels, Concerts, Malls, Theatres, Stadiums, Baggage Claim & Ticket Counters, Embassies, Office Buildings, Schools...
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Earthquake Phone
FREE worldwide use of IP
...except for Mfg/Sale in USA
Rescue people trapped in rubble after Earthquakes, Tsunamis, Typhoons, Hurricanes, Building failures, Avalanche...
Locate, communicate, and determine physical condition to speed and focus rescue
US Patent No 10,070,249
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Trip Tracker with Emergency Detection and Reporting
License or Sale
Tracks progress of a trip. If the traveler doesn't reach a destination (i.e. return home) by a certain time, a third party is notified. Avoids a prolonged period of time where pets and/or children are unattended, especially in the event of a catastrophic accident.
The third party may optionally be notified if an arrival time is predicted to be delayed, as well as when an actual arrival occurs.
US Pat No 9,386,141
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Search Results Annotation
License or Sale
Annotations added to search engine results to show missing keywords on linked Webpages, or annotations added to indicate Webpage type.
US Patents:
9,104,765
9,529,920
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Airplane-Friendly Touchpad Technology

For Sale
Issued US Patents:
8,502,790
9,244,498
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e-Marketing Recommendations based on Weighted Negative Preferences

For Sale
Issued US Patents:
9,122,760
8,429,160
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Electronic Mirror

For Sale
Issued US Patents:
8,451,364
7,978,246
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SOLD! - Portfolios that have been sold are shown below:
Silaero Logo design: Copyright 2003 David A. Hall
Browser Zoom and Multi-Window Search

License or Sale
US Patents:
8,838,736
8,015,259
View IP Description
Prototype Demo Video
Browser Zoom and Multi-Window Search

License or Sale
US Patents:
8,838,736
8,015,259
View IP Description
Prototype Demo Video
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