Inventor
Yu Guan
Inventor
Pleasanton, CA, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties20%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light13%
B60QArrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general7%
F21SNon-portable lighting devices7%
F21YIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted7%
G01BMeasuring length, thickness or similar linear dimensions7%
G01RMeasuring electric variables7%
H01JElectric discharge tubes or discharge lamps7%
H04MTelephonic communication7%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers7%
PatentTitleYear
9,874,597Light-emitting device test systems20189,526,150'LED calibration standard having fast stabilization and lasting stability'20169,500,597'Determination of absolute dimensions of particles used as calibration standards for optical measurement system'20167,027,146'Methods for forming a calibration standard and calibration standards for inspection systems'20066,831,742'Monitoring substrate processing using reflected radiation'20046,570,650'Apparatus and methods for reducing thin film color variation in optical inspection of semiconductor devices and other surfaces'20035,099,519'Headphones'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2016Patents assigned to GUAN YU (2)· patent assignee history
1992Based in Gainesville, FL, US· patent location history
2003Patents assigned to KLA TENOR CORP (1)· patent assignee history
2003–2006Based in San Jose, CA, US· patent location history
2004Patents assigned to APPLIED MATERIALS INC (1)· patent assignee history
2006Patents assigned to KLA TENCOR TECH CORP (1)· patent assignee history
2016–2018Patents assigned to KLA TENCOR CORP (3)· patent assignee history
2016–2018Based in Pleasanton, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KLA TENCOR CORP | 3 | 2016–2018 |
| GUAN YUself | 2 | 1992–2016 |
| APPLIED MATERIALS INC | 1 | 2004 |
| KLA TENCOR TECH CORP | 1 | 2006 |
| KLA TENOR CORP | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Pleasanton, California, US | 3 | 2016–2018 |
| San Jose, California, US | 3 | 2003–2006 |
| Gainesville, Florida, US | 1 | 1992 |