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From PDI

Public Domain Ideas (PDI) is a place where ideas and inventions can be submitted to the public domain. It's like open-source software, but for ideas instead of code. Once an idea is submitted to PDI, it immediately goes into the public domain and cannot be patented. That means anyone is free to develop the concept without fear of litigation, and without having to pay licensing fees.

PDI invites you to:

• Learn more about PDI and the public domain by reading the PDI FAQ.
• Read the PDI About page.
• Learn how to contribute an idea to PDI, or expand on an existing idea.
• Read articles on patents and patent litigation.
• Search for an idea using the search box on the left.
• Browse the Featured Ideas or Idea Categories below.

Featured Ideas

Anti-Fighter Missile Acoustic Homing Device Underwater Navigation System Avalanche Emergency Oxygen Delivery Device Aircraft Flight Data Recorder Underwater Beacon Portable Game Score Tracking Device Missile Based Rapid Response Maritime Emergency Delivery System Smart Traffic Light Module

Dynamic Timeline Scrubber Virtualization and Recreation of Time and Space through Data Processing Thesaurus software for entire sentences Hot Swappable SIM Cartridges Elevators That Know Your Floor Watch Powered by the Body's Electric Current Ice Paper Intelligent Adjustment of Phone Behavior

Idea Categories

Adhesives, Bonding, and Lubrication Aeronautics, Astronautics, and Satellites Agriculture, Gardening, and Forestry Animal Processing Animals and Pet Supplies Apparel and Accessories Art and Art Supplies Baby Needs Bathing, Grooming, and Hygiene Body Art and Piercings Bottles, Jars, and Cans Buildings, Structures, and Fences Business Processes Carpentry Ceramics Chemistry Church and Religion Cleaning Devices and Solutions Coins and Minting Computer Hardware, Information Storage, and Networking Computer Software, Algorithms, and Data Processing Construction, Construction Material, and Hardware Copying and Facsimile Cosmetics and Fragrances Cryptography Dietary Supplements and Nutrition Drugs and Medication Environment and Conservation Education Electronics and Devices Elevators, Escalators, and Walkways Energy, Electricity, and Batteries Engines and Motors Factories, Machinery, and Casts Finance Firearms and Munitions Fishing, Hunting, and Trapping Food and Beverages Fuel Funerals, Cemeteries, and Undertaking Furniture, Furnishings, and Appliances Maps, Atlases, and Globes Games, Toys, Hobbies, and Amusement Glass

GPS and Navigation Health and Exercise Heating, Cooling, and Refrigeration Hydrology, Liquids, and Pipes Jewelry Keys, Locks, and Safes Lighting Luggage, Cases, and Bags Manufacturing Marketing and Merchandising Masonry Medical Equipment, Laboratory Equipment, and Prosthesis Metallurgy and Metal Working Mining Music, Instruments, and Acoustics Nanotechnology Office Supplies Optics and Photography Packaging and Shipping Physics Plants Plastics Printing, Paper, and Books Recording Devices and Media Robots Rope and String Safety Equipment Security Sexuality and Erotica Ships and Maritime Sports and Camping Supports and Racks Telephony, Radio, and Communication Television and Video Textiles and Sewing Tires and Wheels Tobacco and Smoking Tools and Cutlery Transportation, Vehicles, Roads, and Bridges Valves and Pumps Watches and Horology Weights and Measures Writing Instruments