Paul Jarvi resumes & CV records
Resumes
Paul R Jarvi DeceasedSouthbury, CT
Paul Jarvi Phones & Addresses
Southbury, CT
Orange, CT
Salisbury, CT
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Paul R Jarvi
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Publications & IP owners
Us Patents
Room Temperature Blackening Solution
US Patent:
4728365, Mar 1, 1988
Filed:
Aug 11, 1986
Appl. No.:
6/895176
Inventors:
Paul Jarvi - Orange CT
Assignee:
Mitchell Bradford International Corp. - Milford CT
International Classification:
C23C 2200
C23C 2248
C23C 2248
US Classification:
106 105
Abstract:
A room temperature black coating for ferrous metal is formed in a solution based on selenium dioxide, an inorganic copper salt and an organic acid. The solution virtually eliminates the formation of a selenium iron precipitate which results from conventional blackening agents in which an inorganic acid such as phosphoric, sulfuric, nitric or hydrochloric acid is used. Further, the virtual elimination of the precipitate produces the additional benefit that the user needs handle and ultimately dispose of only an insignificant amount of toxic selenium iron or selenium phosphate compound materials.
Black Conversion Coating
US Patent:
4789409, Dec 6, 1988
Filed:
Dec 5, 1986
Appl. No.:
6/938552
Inventors:
Paul R. Jarvi - Orange CT
Assignee:
Mitchell Bradford International Corp. - Milford CT
International Classification:
C23C 2258
US Classification:
148 624
Abstract:
A black conversion coating for substrates contains sodium thiosulfate, nickel sulfate (pentahydrate), zinc sulfate (monohydrate), and sodium fluoborate. The coating comes in a powdered formulation in which the sodium thiosulfate, nickel sulfate, zinc sulfate, and sodium fluoborate comprise, respectively, 54%, 30%, 15% and 1% by weight of the formulation. The powdered matter is mixed with water at a concentration of 30-60 grams per liter of water. The coating is applied at a liquid temperature of 160. degree. -180. degree. F.
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