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Official data from INPI

DRENOS VERTICAIS DE TECNICA SIMPLES

Em AnáliseInvention Patent

Application data

Number

PI8602977

Type

Invention Patent

Filing

06/27/1986

Publication

02/02/1988

Progress at the INPI

Under appeal
  1. Filing06/27/86
  2. Publication02/02/88
  3. Examination09/20/88
  4. Refused01/22/91
  5. Grant
  6. In force

The application was refused by the INPI on 01/22/1991. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 09/20/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

REDE FERROVIARIA FEDERAL S A [BR]

Inventors

B. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/20/1988

RPI 935

Publicação do pedido de patente

#3.1

02/02/1988

RPI 902

Pedido de patente depositado

#2.1

12/09/1986

RPI 842

Indeferimento

#9.2

01/22/1991

RPI 1051

Conhecimento de parecer técnico

#7.1

04/10/1990

RPI 1013

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