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Official data from INPI

EQUIPAMENTO DE PISTÃO PARA MOVIMENTO ALTERNATIVO E DESLIZANTE DENTRO DE UM FURO E MÉTODO PARA FORMAR UM PISTÃO AUTO-VEDANTE

PublicadaInvention Patent

Application data

Number

PI8706830

Type

Invention Patent

Filing

12/11/1987

Publication

07/19/1988

Progress at the INPI

Awaiting grant fee payment
  1. Filing12/11/87
  2. Publication07/19/88
  3. Examination09/18/90
  4. Allowance08/06/91
  5. Grant
  6. In force

The application was allowed by the INPI on 08/06/1991. The grant of the letters patent is being processed.

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Latest action published by the INPI: 07/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. M. (pessoa física)

US

Inventors

R. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

941.372 · 12/12/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/19/1988

RPI 926

Pedido de patente depositado

#2.1

03/01/1988

RPI 906

Retificação

#15.3

01/28/1992

RPI 1104

Republicação - classificação IPC

#15.11

11/26/1991

RPI 1095

Deferimento

#9.1

08/06/1991

RPI 1079

Solicitação de exame técnico

#4.1

09/18/1990

RPI 1033

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