AMERICAN TELEPHONE & TELEGRAPH has a total of 14,346 patent applications. Its first patent ever was published in 1899. It filed its patents most often in United States, Japan and Canada. Its main competitors in its focus markets telecommunications, digital networks and optics are AT & T BELL LAB, AT & T CO and PLESSEY OVERSEAS.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 4,294 | |
#2 | Japan | 3,438 | |
#3 | Canada | 2,540 | |
#4 | EPO (European Patent Office) | 1,457 | |
#5 | Republic of Korea | 570 | |
#6 | WIPO (World Intellectual Property Organization) | 433 | |
#7 | Australia | 303 | |
#8 | China | 166 | |
#9 | United Kingdom | 149 | |
#10 | Taiwan | 123 | |
#11 | Mexico | 113 | |
#12 | Hong Kong | 106 | |
#13 | Spain | 96 | |
#14 | Denmark | 70 | |
#15 | France | 67 | |
#16 | Germany | 62 | |
#17 | Singapore | 56 | |
#18 | Italy | 54 | |
#19 | Israel | 43 | |
#20 | Finland | 33 | |
#21 | Netherlands | 33 | |
#22 | Norway | 29 | |
#23 | Brazil | 24 | |
#24 | Ireland | 19 | |
#25 | Sweden | 18 | |
#26 | India | 15 | |
#27 | Belgium | 13 | |
#28 | Switzerland | 6 | |
#29 | Hungary | 3 | |
#30 | Portugal | 3 | |
#31 | New Zealand | 2 | |
#32 | Poland | 2 | |
#33 | Argentina | 1 | |
#34 | Austria | 1 | |
#35 | Czechia | 1 | |
#36 | Greece | 1 | |
#37 | Malaysia | 1 | |
#38 | Russian Federation | 1 |
# | Industry | |
---|---|---|
#1 | Telecommunications | |
#2 | Digital networks | |
#3 | Optics | |
#4 | Semiconductors | |
#5 | Machines | |
#6 | Computer technology | |
#7 | Audio-visual technology |
# | Technology | |
---|---|---|
#1 | Digital information transmission | |
#2 | Telephonic communication | |
#3 | Semiconductor devices | |
#4 | Selecting | |
#5 | Optical systems | |
#6 | Transmission | |
#7 | Unspecified technologies | |
#8 | Electric digital data processing | |
#9 | Devices using light amplification | |
#10 | Television |
# | Name | Total Patents |
---|---|---|
#1 | Harry Nyquist | 108 |
#2 | Affel Herman A | 104 |
#3 | Lloyd Espenschied | 98 |
#4 | Toomey John F | 72 |
#5 | Green Estill I | 56 |
#6 | Arroyo Candido John | 48 |
#7 | Joseph Herman | 48 |
#8 | Demarest Charles S | 45 |
#9 | Ohl Russell S | 44 |
#10 | Holden William H T | 43 |
Publication | Filing date | Title |
---|---|---|
CN1253441A | Ordinary old style telephone service/grouping bridge | |
CA2178681A1 | Low-crosstalk modular electrical connector assembly | |
KR950013373B1 | Speech message suppling device and speech message reviving method | |
CA2154195A1 | Wireless local radio link telecommunications apparatus | |
CA2153906A1 | Apparatus and method for screening foreign incollect calls to domestic non-collect call telephone numbers to reduce fraud | |
CA2151073A1 | Intelligent human interface system | |
JPH07326920A | Antenna assembly for portable transceiver | |
CA2147670A1 | An improved transimpedance amplifier circuit for use in an optical receiver | |
CA2147399A1 | Feed structure for use in a wireless communication system | |
JPH07300595A | Lubricating method for surface of object | |
CA2145921A1 | Method and apparatus for executing a distributed algorithm or service on a simple network management protocol based computer network | |
JPH07283197A | Formation of substrate with conductor made of metal | |
CA2145106A1 | Intelligent Memory-Based Input/Output System | |
CA2144795A1 | Audio visual dubbing system and method | |
CA2144253A1 | System and Method of Generating Compressed Video Graphics Images | |
CA2143980A1 | User display in speech recognition system | |
CA2143145A1 | Determining Dynamic Properties of Programs | |
JPH07262005A | Extended operand bypass system | |
CA2143076A1 | Communication system for processing caller id information | |
CA2141144A1 | Electronic game utilizing bio-signals |