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.
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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 (61987 views) | To be negotiated | 2 years ago |
![]() | 2. ECO / GREEN Recyclers Raft swimming pool floats use POP btls (6775 views) | 75,000 $ | 1 year ago |
![]() | 3. DRYWALL (DIMPLER) TOOL *Profit Potential in (MILLIONS) Look! (6470 views) | 250,000 $ | 2 years ago |
![]() | 4. Vertical Axis Wind Turbine (6316 views) | To be negotiated | 1 year ago |
![]() | 5. Receipt Card Systems, Consumer Electronic Receipt Archiving (5249 views) | To be negotiated | 2 years ago |
![]() | 6. The Sexy Puff! new Bean bag chair (5149 views) | 500,000 € | 2 years ago |
![]() | 7. Kalashnikov (AK-47) Last Round Hold Open Kit (5009 views) | To be negotiated | 2 years ago |
![]() | 8. Dog Zip Line and Portable/Adjustable Dog Run for All Sizes (4804 views) | 50,000 $ | 1 year ago |
![]() | 9. Superengine powered car runs over 200 miles per gallon. (4088 views) | To be negotiated | 2 years ago |
![]() | 10. Jet Ski Boat (3709 views) | 100,000 $ | 2 years ago |
![]() | 11. Make Millions With This T-shirt Saying! (it is copyrighted) (3616 views) | 200,000 $ | 1 year ago |
![]() | 12. idolmotor (3556 views) | To be negotiated | 10 months ago |
![]() | 13. Denture Repair Kit (3495 views) | + 1 Million $ | 2 years ago |
![]() | 14. condom applicator (3165 views) | To be negotiated | 2 years ago |
| 15. Free Electricity for your home or business (2556 views) | + 1 Million $ | 1 year ago | |
| 16. Rhodium Plating Solution (2534 views) | To be negotiated | 1 year ago | |
![]() | 17. auto anti theft device (2509 views) | To be negotiated | 4 months ago |
![]() | 18. Pulley-Gear System Powered by Permanent Magnets (2401 views) | 825,000 $ | 1 year ago |
![]() | 19. Convertible Wind Surfing Board (Water Bike) (2355 views) | To be negotiated | 1 year ago |
| 20. FREE ENERGY MACHINE..... THE REAL DEAL (2328 views) | To be negotiated | 2 years ago | |
![]() | 21. Green Tea Cigarette (2287 views) | To be negotiated | 2 years ago |
![]() | 22. RING BOTTLE OPENER (QUICK UP) (2185 views) | + 1 Million $ | 2 years ago |
![]() | 23. reusable waterfill sandbags (2136 views) | To be negotiated | 1 year ago |
![]() | 24. HIGH POWER ENERGY SAVING COMPACT FLUORESCENT LAMP (2056 views) | + 1 Million $ | 2 years ago |
![]() | 25. Supercharger Kit for 50cc motorcycle, bike, moped, scooter (2034 views) | To be negotiated | 9 months ago |
![]() | 26. Pivoting Airline Tray Systems, a new tray table concept (1976 views) | To be negotiated | 2 years ago |
![]() | 27. Patented Fish Bone Removal Tool, US Patent No. 6,095,913 (1902 views) | To be negotiated | 1 year ago |
![]() | 28. Pick Holder for Guitarists,The NeckPleck. (1859 views) | 70,000 $ | 2 years ago |
![]() | 29. Paragen - Phenyl amide compounds (1854 views) | To be negotiated | 2 years ago |
![]() | 30. A WASP N HORNETS NEST KILLING MACHINE.. LASER TARGETED..R/C (1825 views) | To be negotiated | 1 year ago |
![]() | 31. Pillow For Lying On Stomach - Face Down (1799 views) | 40,000 $ | 2 years ago |
![]() | 32. bab-e-safe (1795 views) | 20,000 $ | 2 years ago |
![]() | 33. FIREARM SUPPRESSOR, SILENCER, US 7,516,690 (1769 views) | To be negotiated | 9 months ago |
![]() | 34. Color video display for projection systems. (1646 views) | To be negotiated | 2 years ago |
![]() | 35. The Floating Water Bed (1563 views) | + 1 Million $ | 2 years ago |
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