Official data from INPI

PROCESSO DE PROTECAO CONTRA A CORROSAO DE ESTRUTURAS METALICAS ENTERRADAS E SUBMERSAS ATRAVES DE INJECAO DE CORRENTE CONTINUA

IndeferidaInvention Patent

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Application data

Number

PI8302764

Type

Invention Patent

Filing

05/25/1983

Publication

09/20/1983

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Progress at the INPI

Under appeal

Filing05/25/83
Publication09/20/83
Examination02/07/84
Refused06/24/86
Grant
In force

The application was refused by the INPI on 06/24/1986. The invention was never patented.

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Latest action published by the INPI: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IEC INSTALACOES E ENGENHARIA D [BR]

Inventors

G. P. (pessoa física)

Technical data

IPC Classification

C23F 15/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

06/24/1986

RPI 818

Conhecimento de parecer técnico

#7.1

05/28/1985

RPI 762

Republicação - classificação IPC

#15.11

05/14/1985

RPI 760

Pedido de certificado de adição de invenção

#5.1

06/26/1984

RPI 714

Solicitação de exame técnico

#4.1

02/07/1984

RPI 694

Publicação antecipada

#3.2

09/20/1983

RPI 674

Pedido de patente depositado

#2.1

07/12/1983

RPI 664

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