Inventor
SPONG FRED W
US13 patents
⚠️ This page may combine multiple inventors who share the name “SPONG FRED W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RCA CORP
8 patentsUS4305081ADec 8, 1981
Multilayer record blank for use in optical recording
RCA CORP35 citations92
US4183060AJan 8, 1980
Capacitance distance sensor apparatus for video disc player/recorder
RCA CORP51 citations92
US4661941AApr 28, 1987
Optical video or data tape record and playback apparatus
RCA CORP23 citations81
US4190843AFeb 26, 1980
Recording methods for a multilayer optical record
RCA CORP25 citations81
US4148636AApr 10, 1979
Broadening the spatial frequency pass band of a thermoplastic layer
RCA CORP3 citations61
US4137077AJan 30, 1979
Broadening the spatial frequency pass band of a thermoplastic layer
RCA CORP4 citations61
US4219848AAug 26, 1980
Optical record playback apparatus employing light frequency at which alternate regions of record track exhibit anti-reflection condition
RCA CORP1 citations51
US4174881ANov 20, 1979
Recording a synthetic focused-image hologram on a thermally deformable plastic
RCA CORP1 citations51
STORAGE TECHNOLOGY CORP
4 patentsUS4600682AJul 15, 1986
Optical storage structure
STORAGE TECHNOLOGY CORP7 citations73
US4625215ANov 25, 1986
Optical storage structure
STORAGE TECHNOLOGY CORP5 citations62
US4480302AOct 30, 1984
Optical recording media
STORAGE TECHNOLOGY CORP6 citations58
US4625217ANov 25, 1986
Broad band multilayer optical storage structure having a thin metallic optically transmissive layer
STORAGE TECHNOLOGY CORP1 citations51