Inventor

Joseph V. Otrhalek

Inventor

Dearborn, MI, US

Overview

11→

Patents

1976–1985

Patent span

Chemistry

Primary field (CPC C)

Patents· 11 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C11Dprimary

C11DDetergent compositions22%

C23CCoating metallic material22%

C23GCleaning or de-greasing of metallic material by chemical methods other than electrolysis17%

C11BProducing, e.g. by pressing raw materials or by extraction from waste materials, refining or preserving fats, fatty substances, e.g. lanolin, fatty oils or waxes11%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management11%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry6%

C09KMaterials for miscellaneous applications, not provided for elsewhere6%

D21CProduction of cellulose by removing non-cellulose substances from cellulose-containing materials6%

PatentTitleYear

4,531,978'Method of forming chromate conversion coatings on aluminum surfaces and the coating formed thereby'1985 4,529,451'Zinc phosphate coated metal and process of producing same'1985 4,182,637'Post phosphating inhibiting rinse'1980 4,154,725'Method of recovering tall oil from acidulation of raw tall oil soap'1979 4,124,414'Post phosphating inhibiting rinse'1978 4,116,713'Acid cleaner and process for disposal thereof'1978 4,108,669'Snow and ice control composition'1978 4,085,000'Method of recovering tall-oil soap from kraft black liquor'1978 4,032,466'Acid cleaner and process for disposal thereof'1977 4,000,082'Defoaming compositions based on lithium salts'1976 3,954,645'Additive for an acid cleaning bath for metal surfaces'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1980Patents assigned to BASF WYANDOTTE CORP (8)· patent assignee history

1976–1985Based in Dearborn, MI, US· patent location history

1978Patents assigned to IMC CHEMICAL GROUP (1)· patent assignee history

1985Patents assigned to DETREX CHEM IND (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BASF WYANDOTTE CORP	8	1976–1980
DETREX CHEM IND	2	1985
IMC CHEMICAL GROUP	1	1978

Locations

Location	Patents	Span
Dearborn, MI, US	11	1976–1985