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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Newly listed patents |
Current price: |
Created: |
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 | 1. Tire Table (7 views) | 250,000 $ | 5 hours ago |
| 2. Video Game Accessory Wii Pistol Light Gun (4 views) | 10,000 $ | 5 hours ago |
| 3. Pickholder for The Guitarist (9 views) | To be negotiated | 13 hours ago |
| 4. IT'S NOT JUST A TELEVISION ANYMORE!WELCOME TO THE FUTURE (5 views) | To be negotiated | 14 hours ago |
| 5. cheap energy & cars battery (10 views) | To be negotiated | 18 hours ago | |
| 6. Totally Tubular Racer (15 views) | To be negotiated | 1 day ago | |
| 7. Boxing bag counts strikes and power (22 views) | To be negotiated | 2 days ago |
| 8. roof`n`all roofing system,flood prevention water tanks walls (8 views) | To be negotiated | 2 days ago | |
| 9. Radial Flow Fixed Bed Adsorber with Continuous Regeneration (10 views) | To be negotiated | 2 days ago | |
| 10. Method for Improving Radial Flow Moving Bed Performance (10 views) | To be negotiated | 2 days ago | |
| 11. F0R SALE BRAND NEW APPLE IPHONE 4G 32GB (19 views) | 350 $ | 2 days ago | |
| 12. PUZZLES WITH BEVELED EDGES (11 views) | To be negotiated | 2 days ago |
| 13. 360° Jigsaw Puzzles (9 views) | To be negotiated | 2 days ago |
| 14. Stair Ascending Wheelchair (14 views) | To be negotiated | 3 days ago | |
| 15. Stair Climbing Wheelchair (11 views) | To be negotiated | 3 days ago |
Most viewed patents |
Current price: |
Created: |
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| 1. Vertical Axis Wind Turbine (8789 views) | To be negotiated | 2 years ago |
| 2. ECO / GREEN Recyclers Raft swimming pool floats use POP btls (8411 views) | 75,000 $ | 2 years ago |
| 3. Dog Zip Line and Portable/Adjustable Dog Run for All Sizes (6466 views) | 50,000 $ | 2 years ago |
| 4. idolmotor (5568 views) | To be negotiated | 1 year ago |
| 5. --- Firearm Suppressor --- (4025 views) | To be negotiated | 1 year ago |
| 6. Supercharger Kit for 50cc motorcycle, bike, moped, scooter (3826 views) | To be negotiated | 1 year ago |
| 7. Free Electricity for your home or business (3797 views) | + 1 Million $ | 2 years ago | |
| 8. auto anti theft device (3586 views) | To be negotiated | 10 months ago |
| 9. Convertible Wind Surfing Board (Water Bike) (3540 views) | To be negotiated | 2 years ago |
| 10. Rhodium Plating Solution (3452 views) | To be negotiated | 2 years ago | |
| 11. Pulley-Gear System Powered by Permanent Magnets (3398 views) | 825,000 $ | 2 years ago |
| 12. Magnet Motor = Clean Energy Future (3161 views) | To be negotiated | 1 year ago |
| 13. reusable waterfill sandbags (2840 views) | To be negotiated | 2 years ago |
| 14. Patented Fish Bone Removal Tool, US Patent No. 6,095,913 (2688 views) | To be negotiated | 2 years ago |
| 15. A WASP N HORNETS NEST KILLING MACHINE.. LASER TARGETED..R/C (2609 views) | To be negotiated | 2 years ago |
| 16. Electromagnetic Pulse (E. M. P.) Cannon -8> (2313 views) | To be negotiated | 1 year ago |
| 17. -- Safe Concealed Weapon -- (2277 views) | To be negotiated | 1 year ago |
| 18. Folding two man boat, no trailer needed (2258 views) | 49,000 $ | 2 years ago |
| 19. Free Clean Energy from Engine Exhaust with CO2 Scrubber (1918 views) | To be negotiated | 1 year ago |
| 20. Submergible unit for delivering energy from slow rivers (1909 views) | + 1 Million $ | 1 year ago |
| 21. Patent for Car Safety Invention - Mechanical Engineering (1885 views) | To be negotiated | 2 years ago |
| 22. Hand buffing machine for polishing vehicles (ultrasonic) (1824 views) | To be negotiated | 2 years ago | |
| 23. Renewable Energy Through Loss of Bouyancy (1793 views) | 950,000 $ | 2 years ago |
| 24. POCKET OXYGEN - Portable Compact Oxygen Inhaler (1725 views) | 500,000 $ | 2 years ago |
| 25. THE FLAMING ASS-HOLE.. AUTOMATIC AIR FRESHENER.. FARTOMATIC (1691 views) | To be negotiated | 9 months ago |
| 26. Excel Products for Soccer, Baseball , Basketball, etc. (1577 views) | To be negotiated | 2 years ago |
| 27. Instant Action Adjustable Wrench with Anti Slip Grip System (1546 views) | 250,000 € | 2 years ago |
| 28. A PEN-LIKE DEVICE FOR DETECTING IMITATION GOLD (1526 views) | + 1 Million $ | 2 years ago | |
| 29. Portable Gas can for Motorcycles (1523 views) | 28,000 $ | 1 year ago |
| 30. motorcycle kickstand (1467 views) | To be negotiated | 2 years ago |
| 31. next generation snow chains (1460 views) | + 1 Million € | 9 months ago |
| 32. Thermoelectric generator system for electrical power/heating (1442 views) | To be negotiated | 8 months ago | |
| 33. Coconut Dehusking Machine (1429 views) | 10,000 $ | 1 year ago |
| 34. FREE ELECTRIC ENERGY !!! SEA - WAVE GENERATOR !!! (1369 views) | 300,000 € | 1 year ago |
| 35. Anti-Finger catching System (1363 views) | + 1 Million $ | 2 years ago |
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