Inventor · Bottrop, DE

Roland Stark

38Patents
11h-index
44Co-inventors
75Inventor score

Filing activity: Sep 11, 1989 → Jan 21, 2015

Most-cited inventions

PatentTitleAreaCited byStatus
USD421844S Toothbrush General 70 Expired
US6514445B1 Brush making Performing Operations; Transporting 69 Expired
USD551784S1 Halogen bulb with a reflector General 58 Expired
USD541151S1 Cap for product dispenser General 30 Expired
USD540671S1 Cap for product dispenser General 27 Expired
USD568736S1 Product dispensing package General 25 Expired
US6075318A Halogen incandescent lamp having a socket Electricity 23 Expired
US4994707A Vibration-resistant single-ended halogen incandescent lamp Electricity 22 Expired
USD558051S1 Product dispensing package General 21 Expired
US5146134A Halogen incandescent lamp, particularly for operation from power networks, and method of its manufacture Electricity 19 Expired
USD599214S1 Secondary package for dispenser General 12 Expired
USD533077S1 Product dispensing package General 11 Expired
US6060820A Reflector lamp Electricity 10 Expired
USD736924S1 Trocar General 9 Active
USD688821S1 LED spotlight lamp General 7 Active
US6918710B2 Disposable package for a volatile liquid Performing Operations; Transporting 6 Expired
US9872551B2 Packaged antiperspirant compositions Human Necessities 6 Active
US6210029A Reflector lamp Electricity 6 Expired
US5218261A Single based electric lamp Electricity 5 Expired
US7119484B2 Headlamp capsule with debris protection Mechanical Engineering; Lighting; Heating 5 Expired
USD532705S1 Product dispensing package General 4 Expired
USD534434S1 Product dispensing package General 4 Expired
US5883469A Halogen lamp with an inherent safety effect Electricity 3 Expired
US5367220A Electric lamp with a holding frame for a lamp filament Electricity 3 Expired
US5453655A Single-based incadescent lamp construction Electricity 3 Expired

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