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Charles C. Cheng — 13 Patents

RRRead Rite: 8 patents #30 of 255Top 15%
ATAT&T: 3 patents #5,559 of 18,772Top 30%
Ncr: 1 patents #2,415 of 3,019Top 80%
Redmond, WA: #1,009 of 8,547 inventorsTop 15%
Washington: #7,874 of 76,902 inventorsTop 15%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Charles C. Cheng has been granted 13 US patents while listed as an inventor at Read Rite. The first was granted in 1980 and the most recent in July 2024. Charles C. Cheng ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Charles C. Cheng in Redmond, WA, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12046374 Digital twin Zhiqing Cheng 2024-07-23
9536007 Method for location-based asset management Xinguo Wei 2017-01-03 $28,648,000
7579960 Method for location-based asset management Xinguo Wei 2009-08-25 $47,230,000
6806813 Method for location-based asset management Xinguo Wei 2004-10-19
6377535 High numerical aperture optical focusing device having a conical incident facet and a parabolic reflector for use in data storage systems Hong Chen, Chuan He, Carl J. Carlson, Joseph J. Miceli, Yugang Wang 2002-04-23 $4,908,000
6229782 High numerical aperture optical focusing device for use in data storage systems Yugang Wang, Chuan He, Hong Chen, Joseph J. Miceli, Ross W Stovall 2001-05-08 $12,257,000
6212153 High NA solid catadioptric focusing device having a flat kinoform phase profile Hong Chen, Chuan He, Ross W Stovall 2001-04-03 $29,492,000
6185051 High numerical aperture optical focusing device for use in data storage systems Hong Chen, Chuan He, Joseph J. Miceli 2001-02-06 $11,667,000
6130779 Near field magneto-optical head made using wafer processing techniques Carl J. Carlson, Joseph J. Miceli, Hong Chen, Chuan He, Ross W Stovall 2000-10-10 $9,145,000
6094803 Wafer processing techniques for near field magneto-optical head Carl J. Carlson, Joseph J. Miceli, Hong Chen, Chuan He, Ross W Stovall 2000-08-01 $2,957,000
5986978 Read/write head and method for magnetic reading and magneto-optical writing on a data storage medium Robert Earl Rottmayer, Xizeng Shi, Lijun Tong, Hua-Ching Tong 1999-11-16 $1,664,000
5986995 High NA catadioptric focusing device having flat diffractive surfaces Chuan He, Hong Chen 1999-11-16 $1,664,000
4224509 Holographic scanning system — 1980-09-23 $3,896,000

Nearby-Ranked Inventors

Jianping Shen13
Eric John Telfeyan13
George R. Breiwa, III13
Thomas Sugar13
Andrew Howley13
Howard Halpern13
Po-Yuan Wang13
Douglas Vanesko13
Tanuj Trivedi13