GROVE HYDROGEN CELLS LLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01S DEVICES USING STIMULATED EMISSION587
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 3202
 
  
 
B01D SEPARATION 1133
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 196
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 1361

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6036753 Use of glass fiber materials in diagnosing and preventing radon infiltration into buildingsAug 19, 98Mar 14, 00[B01D]
5877890 Optical-fiber amplifier having high-saturation outputOct 30, 96Mar 02, 99[H01S]
5818149 Ceramic composites and methods for producing sameMar 25, 96Oct 06, 98[H01L]
5706392 Perceptual speech coder and methodJun 01, 95Jan 06, 98[G10L]
5574807 Coupler used to fabricate add-drop devices, dispersion compensators, amplifiers, oscillators, superluminescent devices, and communications systemsJun 06, 95Nov 12, 96[G02B]
5459801 Coupler used to fabricate add-drop devices, dispersion compensators, amplifiers, oscillators, superluminescent devices, and communications systemsJan 19, 94Oct 17, 95[G02B]
5457758 Add-drop device for a wavelength division multiple, fiber optic transmission systemOct 29, 93Oct 10, 95[G02B]
5432806 Four level multiply doped rare earth laser systemMar 24, 94Jul 11, 95[H01S]
5379149 Glass compositions having low energy phonon spectra and light sources fabricated therefromAug 06, 93Jan 03, 95[H01S]
5369995 Humidity sensorApr 21, 93Dec 06, 94[G01N]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6373863 Yitterbium laser systemExpiredJun 19, 97Apr 16, 02[H01S]
6004500 Methods for producing novel ceramic compositesExpiredMay 19, 98Dec 21, 99[C04B]

Top Inventors for This Owner

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