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Official data from INPI

APARELHO RECUPERADOR DE PILHAS E BATERIAIS DE NÍQUEL - CÂDMIO QUE APRESENTAM EFEITO - MEMÓRIA

Prazo de SigiloInvention Patent

Application data

Number

PI8903678

Type

Invention Patent

Filing

07/25/1989

Publication

01/29/1991

Progress at the INPI

  1. Filing07/25/89
  2. Publication01/29/91
  3. Abandoned11/19/91
  4. Allowance
  5. Grant
  6. In force

The applicant withdrew the application. The case ended without a patent.

Talk to a specialist

Latest action published by the INPI: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

Instituto de Pesquisas Tecnológicas de São Paulo S/A - IPT

SP, BR

See this company's full portfolio

Inventors

P. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

10/31/1989

RPI 993

10.1

08/20/1996

RPI 1342

Solicitação de exame técnico

#4.1

11/19/1991

RPI 1094

Solicitação de exame não realizada

#4.2

10/01/1991

RPI 1087

Publicação do pedido de patente

#3.1

01/29/1991

RPI 1052

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