Official data from INPI

PROCESSO E DISPOSITIVO DE PREPARACAO DIRETA DE OXIDO DE CHUMBO TECNICO

IndeferidaInvention Patent

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Application data

Number

PI8004548

Type

Invention Patent

Filing

05/02/1980

Publication

03/23/1982

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Progress at the INPI

Under appeal

Filing05/02/80
Publication03/23/82
Examination04/03/84
Refused02/04/86
Grant
In force

The application was refused by the INPI on 02/04/1986. The invention was never patented.

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Latest action published by the INPI: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GOSLARER FARBENWERKE [DE]

HEUBACH HANS DR GMBH CO KG [DE]

Inventors

H. D. (pessoa física)

H. R. (pessoa física)

K. P. (pessoa física)

M. R. (pessoa física)

Technical data

IPC Classification

C01G 21/06

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

02/04/1986

RPI 798

14.4

05/07/1985

RPI 759

Pedido de certificado de adição de invenção

#5.1

08/21/1984

RPI 722

Solicitação de exame técnico

#4.1

04/03/1984

RPI 702

Publicação do pedido de patente

#3.1

03/23/1982

RPI 596

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