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Official data from INPI

PROCESSO DE RECUPERAÇÃO DE VÁLVULA INFERIOR DO SISTEMA DE VÁLVULA GAVETA

Em AnáliseInvention Patent

Application data

Number

PI8506621

Type

Invention Patent

Filing

12/19/1985

Publication

07/07/1987

Progress at the INPI

Technical opinion to answer
  1. Filing12/19/85
  2. Publication07/07/87
  3. Examination03/01/88
  4. Allowance
  5. Grant
  6. In force

The INPI issued a technical opinion on patentability. The applicant must respond for examination to continue.

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Latest action published by the INPI: 06/07/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica de Tubarão S/A - CST

ES, BR

See this company's full portfolio

Inventors

G. A. (pessoa física)

BR

L. V. (pessoa física)

BR

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

06/07/1988

RPI 920

Solicitação de exame técnico

#4.1

03/01/1988

RPI 906

Publicação do pedido de patente

#3.1

07/07/1987

RPI 872

Pedido de patente depositado

#2.1

04/08/1986

RPI 807

Retificação

#15.3

10/13/1992

RPI 1141

Republicação - classificação IPC

#15.11

09/22/1992

RPI 1138

Conhecimento de parecer técnico

#7.1

10/29/1991

RPI 1091

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