Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Use of substituted ortho-quinones as electron transfer agents in analytical determinations

Use of substituted ortho-quinones as electron transfer agents in analytical determinations

US Patent 4879243 · Granted Nov 7, 1989

Estimated economic value: $8,822,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Stabilized silver halide photographic element2006
Coupler and image dye light-stabilizing systems2006
Silver halide photographic element and process2005
Photographic element with dye-forming coupler and image dye stabilizing coupler 2005
Photographic element containing improved stabilizer2002
Photographic element, dispersion, compound and process2001
Photographic element containing nitrogen heterocycle substituted cyan coupler an2001
Photographic element containing a cyclic azole coupler and an anti-fading agent 2000
Photographic element containing pyrazoloazole coupler and a specific anti-fading2000
Photographic element with new singlet oxygen quenchers2000
Saccharin derivatives useful as proteolytic enzyme inhibitors and compositions a1999
Saccharin derivative proteolytic enzyme inhibitors1998