Inventor · Palo Alto, CA, US

Joseph Hei

18Patents

13h-index

12Co-inventors

75Inventor score

Filing activity: Oct 22, 1999 → Jan 12, 2022

Most-cited inventions

Patent	Title	Area	Cited by	Status
US7338122B2	Modular child restraint system	Performing Operations; Transporting	69	Expired
US7887129B2	Actively securable base for a modular child restraint system	Performing Operations; Transporting	39	Active
US7559606B2	Modular child restraint system	Performing Operations; Transporting	35	Active
US7770970B2	Modular child restraint system	Performing Operations; Transporting	31	Active
US7891732B2	Extendable sunshade for child car seat	Performing Operations; Transporting	31	Active
US7789413B2	Removable flexible dual-opening carrying basket	Human Necessities	26	Active
US9700152B2	Hip seat device and system	Mechanical Engineering; Lighting; Heating	25	Active
US7740313B1	Child restraint systems	Performing Operations; Transporting	23	Active
US8235465B2	Modular child restraint system	Performing Operations; Transporting	19	Active
US8511749B2	Modular child restraint system	Performing Operations; Transporting	18	Active
US8182033B2	Child restraint systems	Performing Operations; Transporting	15	Active
US8256841B2	Actively securable base for a modular child restraint system	Performing Operations; Transporting	14	Active
US8714582B2	Ride along board for baby stroller	Performing Operations; Transporting	13	Active
US8534751B2	Extendable sunshade for child car seat	Performing Operations; Transporting	13	Active
US10420397B2	Foot measuring and sizing application	Physics	11	Active
USD461499S1	Combination stylus and pen	General	10	Expired
US11324285B2	Foot measuring and sizing application	Physics	6	Active
US11805861B2	Foot measuring and sizing application	Physics	0	Active

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