Patent Auction lists patented inventions for sale or license
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Patent Auction.com is an online marketplace for inventions protected by patent rights. There are patents for sale or license in all fields of industry.
You can freely browse through our entire database, starting from the categories below and if you have questions about any specific invention, you can contact the inventor directly through this site.
Inventors can list their patented inventions (or patent pending) for free. Listing your patent on Patent Auction is very easy. More...
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PatentAuction.com (previously known as FreePatentAuction.com) has been providing free patent listings since 2004 and will continue doing so in the future. It is the oldest and largest patent listings platform. We have put in relation thousands of inventors and potential buyers.
Patent Categories
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Newly listed patents |
Current price: |
Created: |
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| 1. OPERATION PROTECTION SYSTEM FOR SPACE-HEATING INSTALLATIONS (43 views) | To be negotiated | 18 hours ago | |
| 2. DUAL MODE TRANSPORTATION ARCHITECTURE (48 views) | To be negotiated | 1 day ago | |
| 3. Automatic Cat Grooming Device Eliminates Pet Hair For Life! (80 views) | To be negotiated | 2 days ago | |
 | 4. Dynamic rear wing (83 views) | To be negotiated | 2 days ago |
| 5. Quick Dry Express Toilet Seats Wipes (87 views) | To be negotiated | 2 days ago | |
| 6. BOTTLE IN THE FORM OF A DOLLAR SIGN SYMBOL (72 views) | To be negotiated | 2 days ago |
| 7. Color Bottle Cap (105 views) | 350,000 USD | 3 days ago | |
| 8. Ground transportation safety system, imagery, data, light alert (80 views) | To be negotiated | 3 days ago | |
| 9. GeoQuesting, Adventure in advertising US 13/425,427 (82 views) | To be negotiated | 3 days ago | |
| 10. eco-house quickly (eco-hq) (95 views) | 200,000 USD | 3 days ago |
| 11. Can you do it??? INVENTOR'S OPPORTUNITY!!! Read this! (166 views) | To be negotiated | 4 days ago | |
| 12. Self-leveling catch basin system (112 views) | To be negotiated | 4 days ago |
| 13. THE COMPUTER USER PAIN RELIEVING VEST OR JACKET (74 views) | To be negotiated | 4 days ago |
| 14. Hitch Lokk (154 views) | 99 USD | 5 days ago | |
| 15. Barber Stool/Beautician Stool, first of its kind, Ever! (102 views) | To be negotiated | 5 days ago |
Most viewed patents |
Current price: |
Created: |
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| 1. McClellan Permanent MAGNET MOTOR - (26965 views) | To be negotiated | 4 years ago |
| 2. Micro Mirrors Shield Protecting Earth from Global Warming (9584 views) | To be negotiated | 5 months ago |
| 3. Firearm SILENCER (6633 views) | To be negotiated | 2 years ago |
| 4. Concealed Carry --- Trigger SAFETY CLIP (4554 views) | To be negotiated | 2 years ago |
| 5. Hi efficiency DIP TUBE for WATER HEATER (4300 views) | To be negotiated | 2 years ago |
| 6. BIOPSY NEEDLE - SOFT TISSUE - END CUTTING (4184 views) | To be negotiated | 2 years ago |
| 7. ONE PIECE HINGE -- TORSIONING STEEL (3919 views) | To be negotiated | 2 years ago |
| 8. Trailer Hitch MOTORCYCLE TOWING (3744 views) | To be negotiated | 2 years ago |
| 9. Ultra sonic 3-Diminsional CASTING with COMPOSITES (3691 views) | To be negotiated | 2 years ago |
| 10. OPEN Sterile -- Food CONTAINER SEAL - (3529 views) | To be negotiated | 2 years ago |
| 11. FREQUENCY TUNABLE - ACOUSTIC INSULATION -- (3479 views) | To be negotiated | 2 years ago |
| 12. ANTITHERMAL SHIELD FOR ROCKETS (3225 views) | + 1 Million USD | 10 months ago |
| 13. THE FLAMING ASS-HOLE.. AUTOMATIC AIR FRESHENER.. FARTOMATIC (3059 views) | To be negotiated | 1 year ago |
| 14. A NEVER-DEFORMED PILLOW NEEDS NOT TO BE DREAMT; IT'S REALLY TRUE (2992 views) | To be negotiated | 11 months ago |
| 15. Toothpaste Dispensing Toothbrush Cap- Patent For Sale! (2978 views) | 100,000 USD | 2 years ago |
| 16. REVOLVER SAFETY - Selectable Lockable -- (2825 views) | To be negotiated | 2 years ago |
| 17. ABSORBENT WATER BATERY SET UP IN THE VAT OF OIL TRANSFORMERS (2772 views) | + 1 Million USD | 11 months ago |
| 18. REACTIVE CAR SUSPENSION -- COMPOUND TORSION (2720 views) | To be negotiated | 2 years ago |
| 19. Receipt Card Systems, Consumer Electronic Receipt Archiving (2700 views) | To be negotiated | 10 months ago |
| 20. REACTIVE CAR SUSPENSION --- PARALLEL TORSION (2537 views) | To be negotiated | 2 years ago |
| 21. SPEED LOADER -- FLEX to load Lay-out flat to conceal (2443 views) | To be negotiated | 2 years ago |
| 22. LED Tire Stick (2356 views) | To be negotiated | 2 years ago |
| 23. Clutch or BRAKE PADS w/ auto wear indicator (2279 views) | To be negotiated | 2 years ago |
| 24. Vending Machine - SLOT PROTECTOR (2240 views) | To be negotiated | 2 years ago |
| 25. Driving Shoe Heel Protector. TM -Domain (2185 views) | 50,000 USD | 1 year ago |
| 26. Automatic fan speed control according to room temperature (2137 views) | To be negotiated | 11 months ago |
| 27. Forearm Crutch Putter (2136 views) | To be negotiated | 2 years ago |
| 28. Internal Combustion Engine - Hybrid Engine - Stirling Engine (2116 views) | + 1 Million € | 1 year ago |
| 29. FREE COMPRESSION TUBE FOR ROCKETS (2094 views) | + 1 Million USD | 7 months ago |
| 30. The Bloody Red Infinite Heart of My Virgina Sun (2033 views) | 666,926 € | 2 years ago |
| 31. Rings an bracelets an trademark SWJ for sale. (1951 views) | To be negotiated | 2 years ago |
| 32. Pear Pirate (1869 views) | 10,000 $ | 2 years ago |
| 33. iQplug - Plug and Play Electrical Wiring System (1869 views) | To be negotiated | 2 years ago |
| 34. Superior Cure Against Schism (split) In The Phren (psyche) (1867 views) | 992,266 € | 2 years ago |
| 35. Propulsion system for scuba diver (1805 views) | 250,000 $ | 2 years ago |
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