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Patents Grants
last 30 patents
Information
Patent Grant
Purified quartz and process for purifying quartz
Patent number
5,037,625
Issue date
Aug 6, 1991
The Feldspar Corporation
Kenneth B. Loritsch
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Purified quartz and process for purifying quartz
Patent number
4,983,370
Issue date
Jan 8, 1991
The Feldspar Corporation
Kenneth B. Loritsch
C01 - INORGANIC CHEMISTRY
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
79423142 - F
Serial number
79423142
Filing date
Feb 24, 2025
Feldspar Limited
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
79408741 - FELDSPAR
Serial number
79408741
Filing date
Jun 24, 2024
Feldspar Limited
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information
Trademark
73718411 - UHP CRYSTAL
Serial number
73718411
Registration number
1539348
Filing date
Mar 24, 1988
FELDSPAR CORPORATION, THE
19 - Building materials (non-metallic)
Information
Trademark
73696141 - HP CRYSTAL
Serial number
73696141
Registration number
1552885
Filing date
Nov 18, 1987
FELDSPAR CORPORATION, THE
19 - Building materials (non-metallic)