Inventor · Middelfart, DK

Johan Birger

66Patents

25h-index

15Co-inventors

81Inventor score

Filing activity: Feb 8, 2007 → Dec 4, 2023

Most-cited inventions

Patent	Title	Area	Cited by	Status
USD870451S1	Case	General	175	Active
USD739842S1	Headphone	General	125	Active
USD617769S1	Headphone	General	122	Expired
US8655005B2	Earphone system comprising an earphone and a portable holding device	Electricity	113	Active
USD750041S1	Headphones	General	88	Active
USD656490S1	Headset	General	80	Expired
USD617778S1	Headset and base	General	73	Expired
USD693796S1	Headset	General	65	Active
USD750043S1	Communication headset	General	60	Active
USD904755S1	Headphone storage case	General	56	Active
USD671915S1	Headset	General	48	Active
USD702210S1	Headphone	General	46	Active
USD816636S1	Headphones	General	42	Active
USD619998S1	Headset	General	40	Expired
USD866530S1	Earphones	General	37	Active
USD940109S1	Earphones and case	General	35	Active
USD586329S1	Headset	General	35	Expired
USD801312S1	Holder for a headset	General	34	Active
USD953265S1	Charging case	General	33	Active
USD755159S1	Headset	General	31	Active
USD662913S1	Headset	General	30	Active
USD793360S1	Headset	General	30	Active
USD746267S1	Headset	General	28	Active
USD592190S1	Headset	General	28	Expired
USD719928S1	Music player	General	27	Active

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