Inventor · Berea, OH, US

David C. Williams

55Patents
12h-index
57Co-inventors
87Inventor score

Filing activity: Apr 10, 1975 → Jul 31, 2019

Most-cited inventions

PatentTitleAreaCited byStatus
US8758144B2 Separable backlighting system Physics 77 Active
US8968077B2 Methods and systems for interfacing with a third-party application Physics 42 Active
US8142273B2 Presentation of wheels on gaming machines having multi-layer displays Physics 36 Active
US4001944A Freeze-drying process Human Necessities 33 Expired
US4410794A Switching system for cyclic supply of electrical power to a plurality of loads Electricity 29 Expired
US6210352A Splashproof and adjustable limb sleeve Human Necessities 29 Expired
US8210922B2 Separable game graphics on a gaming machine Physics 25 Active
US8353764B2 Behavioral biometrics for authentication in computing environments Physics 21 Active
US8512139B2 Multi-layer display 3D server based portals Physics 18 Active
US8192281B2 Simulated reel imperfections Physics 17 Active
US8727855B2 Three-dimensional paylines for gaming machines Physics 17 Active
US10497204B2 Methods and systems for tracking an event of an externally controlled interface Physics 13 Active
US8360847B2 Multimedia emulation of physical reel hardware in processor-based gaming machines Physics 12 Active
US5126678A A.C. Generator fault detector Electricity 12 Expired
US4900578A Process for making frozen rehydrated legumes Human Necessities 12 Expired
US9115603B2 Multiple organic Rankine cycle system and method Mechanical Engineering; Lighting; Heating 12 Active
US5076410A Friction facing material and carrier assembly Mechanical Engineering; Lighting; Heating 10 Expired
US8357033B2 Realistic video reels Human Necessities 10 Active
US8199068B2 Single plane spanning mode across independently driven displays Physics 9 Active
US9873005B1 Fireman's carry strap Performing Operations; Transporting 6 Active
US9342955B2 Methods and systems for tracking an event of an externally controlled interface Physics 6 Active
US3998554A Optical alignment techniques Physics 4 Expired
US9533967B2 Multisubstituted aromatic compounds as inhibitors of thrombin Chemistry; Metallurgy 4 Active
US9519762B2 Behavioral biometrics for authentication in computing environments Physics 4 Active
US4355239A Electrical power supply arrangement Electricity 3 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.