Inventor

JOHNSON DONALD A

US41 patents

⚠️ This page may combine multiple inventors who share the name “JOHNSON DONALD A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

JOHNSON DONALD A

NALCO CHEMICAL CO

Cooling water corrosion inhibition method

Cooling water corrosion inhibition method

Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom

Modified acrylamide polymers used as scale inhibitors

Cooling water corrosion inhibition method

Method for prevention of phosphonate decomposition by chlorine

Method for prevention of phosphonate decomposition by chlorine

Continuous on-stream monitoring of cooling tower water

Carbon steel corrosion inhibitors

Compositions comprising transition metals for treating and monitoring liquid systems

Transition metals as treatment chemical tracers

Oligomer containing phosphinate compositions and their method of manufacture

Method for the control of calcium carbonate scale using compounds prepared from acetylenic compounds and inorganic phosphite salts and their derivatives

Method for using ozone in cooling towers

Modified maleic anhydride polymers and the like for use as scale inhibitors

Process for removal of primarily iron oxide deposits

Composition of corrosion inhibitors for cooling water systems using chemically modified acrylamide or methacrylamide polymers

Method for the oxidation of water-soluble sulfide compounds to higher oxidation states

Cooling water corrosion control method and composition

Method of preventing yellow metal corrosion in aqueous systems with superior corrosion performance in reduced environmental impact

Anionic polymers containing 3-acrylamido-3-methylbutanoic acid as scale inhibitors for preventing or reducing calcium phosphate and other scales

Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom

Phosphinate compounds prepared from acetylenic compounds and inorganic phosphite salts and derivatives of these compounds

Zinc stabilization with modified acrylamide based polymers and corrosion inhibition derived therefrom

ECOLAB USA INC

Tetrazole based corrosion inhibitors

Corrosion inhibitors

Tetrazole based corrosion inhibitors

Process and method for reducing metal corrosion in water

NALCO CO

Method for chemistry control in cooling systems

Tungstate based corrosion inhibitors

Tungstate based corrosion inhibitors

ALGOS PHARM CORP

Transdermal drug delivery device and method for its manufacture

Wound dressing

PHARMADYN INC

Nonocclusive drug delivery device and process for its manufacture

ONDEO NALCO CO

Stabilized bromine solutions, method of making and uses thereof for biofouling control

HEWLETT PACKARD CO

Multilayer multipole

U S DERMATOLOGICS INC

Nonocclusive drug delivery device and process for its manufacture

COCA COLA CO

Data logger for a post-mix beverage dispensing system

SCHERING CORP

Stable hydrated cephalosporin dry powder for oral suspension formulation

JOHNSON DONALD A

Polymers for prevention of fouling by iron oxides in cooling systems

(unassigned)

Automotive wire spoke wheels