Inventor

Hasso Hertel

Inventor

Muhlheim, DE

Overview

19→

Patents

1976–1991

Patent span

Textiles

Primary field (CPC D)

Patents· 19 as inventor

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

D06Pprimary

D06PDyeing or printing textiles46%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments35%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%

C07CAcyclic or carbocyclic compounds3%

C09KMaterials for miscellaneous applications, not provided for elsewhere3%

PatentTitleYear

4,987,221'Bisdiazonium salts of 4,4\'-diamino-3,3\'-dialkoxybiphenyls and a process for their preparation'1991 4,906,250'Process for the preparation of water-insoluble azo dyes on the fiber: impregnating with coupling component and treating with diazonium salt of 4-chloro-2,5-dialkoxy aniline'1990 4,696,675'Process for preparing water-insoluble blue azo dyes on the fiber: hydroxynaphthoic amide and diazotized di-alkoxy-benzidine'1987 4,599,450'Process for the preparation of acid nitro dyestuffs'1986 4,591,359'Process for preparing acid nitro dyestuffs for leather'1986 4,368,054'Compositions of nitro-anilines for producing azo dyes on fibers'1983 4,331,443'Concentrated solutions of water-insoluble coupling components'1982 4,306,876'Aqueous dispersions of primary aromatic amines, their use for the production of water-insoluble azo dyes on the fiber and the use of an anionic surfactant for the manufacture of said dispersions'1981 4,224,027'Process for the production of water-insoluble azo dyestuffs on the fiber with polyphosphate'1980 4,195,973'Process for printing with developing dyes which employs having ether substituents derived from glycols, polyglycols, or alkoxy derivatives thereof'1980 4,183,727'Process for the production of water-insoluble azo dyestuffs on the fiber'1980 4,094,637'Process for the printing with developing dyes'1978 4,082,503'Process for the production of water-insoluble azo dyestuffs on the fiber'1978 4,078,887'Concentrated stable solutions of coupling components for the ice color dyeing, their preparation and use'1978 4,035,144'Dyeing preparations containing boric acid for preparing water-insoluble azo dyestuffs on fiber'1977 3,990,985'Stable and storable aqueous dispersions of primary aromatic amines, their preparation and use'1976 3,961,886'Process for the dyeing and printing of cellulose-containing textile materials'1976 3,961,887'Process for the printing of cellulose containing textile material'1976 3,961,884'Process for dyeing textile material of polyester fiber/cellulose blends'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1991Patents assigned to HOECHST AG (18)· patent assignee history

1976–1991Based in Muhlheim, DE· patent location history

1976–1986Based in Mulheim, DE· patent location history

1990Patents assigned to HERTEL HASSO (1)· patent assignee history

1990Based in Frankfurt am Main, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HOECHST AG	18	1976–1991
HERTEL HASSOself	1	1990

Locations

Location	Patents	Span
Muhlheim, DE	16	1976–1991
Mulheim, DE	2	1976–1986
Frankfurt am Main, DE	1	1990