Patent Auction lists patented inventions available for sale or license
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Patent Auction.com is an online marketplace for innovative ideas protected by patent rights.
The broad range of inventions for sale or license touches upon all fields of industry.
You can freely browse through our entire database, starting from the categories below.
If you have questions about any specific invention, you can contact the inventor directly through this website.
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Inventors can list their patented inventions (or patent pending) for free.
We encourage inventors from all countries to submit their inventions, provided that they have applied for patent protection.
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PatentAuction.com was previously known as "FreePatentAuction.com" and has been providing free patent listings since 2004.
Patent Categories
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Most viewed patents |
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![]() | 1. Multi-positional Sexual Intercourse Chair (61120 views) | To be negotiated | 2 years ago |
![]() | 2. ECO / GREEN Recyclers Raft swimming pool floats use POP btls (6382 views) | 75,000 $ | 1 year ago |
![]() | 3. DRYWALL (DIMPLER) TOOL *Profit Potential in (MILLIONS) Look! (6221 views) | 250,000 $ | 2 years ago |
![]() | 4. Vertical Axis Wind Turbine (5915 views) | To be negotiated | 1 year ago |
![]() | 5. Receipt Card Systems, Consumer Electronic Receipt Archiving (4938 views) | To be negotiated | 2 years ago |
![]() | 6. The Sexy Puff! new Bean bag chair (4826 views) | 500,000 € | 2 years ago |
![]() | 7. Kalashnikov (AK-47) Last Round Hold Open Kit (4766 views) | To be negotiated | 2 years ago |
![]() | 8. Dog Zip Line and Portable/Adjustable Dog Run for All Sizes (4525 views) | 50,000 $ | 1 year ago |
![]() | 9. Folding Boat Trailer (4006 views) | To be negotiated | 2 years ago |
![]() | 10. Superengine powered car runs over 200 miles per gallon. (3886 views) | To be negotiated | 2 years ago |
![]() | 11. Jet Ski Boat (3458 views) | 100,000 $ | 2 years ago |
![]() | 12. Denture Repair Kit (3319 views) | + 1 Million $ | 2 years ago |
![]() | 13. Make Millions With This T-shirt Saying! (it is copyrighted) (3249 views) | 200,000 $ | 1 year ago |
![]() | 14. idolmotor (3172 views) | To be negotiated | 9 months ago |
![]() | 15. condom applicator (2871 views) | To be negotiated | 2 years ago |
| 16. Free Electricity for your home or business (2364 views) | + 1 Million $ | 1 year ago | |
| 17. Rhodium Plating Solution (2325 views) | To be negotiated | 1 year ago | |
![]() | 18. Pulley-Gear System Powered by Permanent Magnets (2183 views) | 825,000 $ | 1 year ago |
| 19. FREE ENERGY MACHINE..... THE REAL DEAL (2176 views) | To be negotiated | 2 years ago | |
![]() | 20. Convertible Wind Surfing Board (Water Bike) (2145 views) | To be negotiated | 1 year ago |
![]() | 21. auto anti theft device (2128 views) | To be negotiated | 3 months ago |
![]() | 22. Green Tea Cigarette (2110 views) | To be negotiated | 2 years ago |
![]() | 23. THE WORLDS FIRST ANTI-SWAY BAR CONTROLLER KIT (2104 views) | To be negotiated | 2 years ago |
![]() | 24. reusable waterfill sandbags (1997 views) | To be negotiated | 1 year ago |
![]() | 25. RING BOTTLE OPENER (QUICK UP) (1985 views) | + 1 Million $ | 2 years ago |
![]() | 26. HIGH POWER ENERGY SAVING COMPACT FLUORESCENT LAMP (1907 views) | + 1 Million $ | 2 years ago |
![]() | 27. Pivoting Airline Tray Systems, a new tray table concept (1780 views) | To be negotiated | 2 years ago |
![]() | 28. Patented Fish Bone Removal Tool, US Patent No. 6,095,913 (1753 views) | To be negotiated | 1 year ago |
![]() | 29. Supercharger Kit for 50cc motorcycle, bike, moped, scooter (1738 views) | To be negotiated | 8 months ago |
![]() | 30. Paragen - Phenyl amide compounds (1731 views) | To be negotiated | 2 years ago |
| 31. Automobile Battery-Saver (1721 views) | To be negotiated | 2 years ago | |
![]() | 32. Pick Holder for Guitarists,The NeckPleck. (1666 views) | To be negotiated | 2 years ago |
![]() | 33. A WASP N HORNETS NEST KILLING MACHINE.. LASER TARGETED..R/C (1633 views) | To be negotiated | 1 year ago |
![]() | 34. bab-e-safe (1627 views) | 20,000 $ | 2 years ago |
![]() | 35. Pillow For Lying On Stomach - Face Down (1618 views) | 40,000 $ | 1 year ago |
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