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Official data from INPI

SISTEMA DE VALVULA DE SEGURANCA COM CARACTERISTICA DE EQUILIBRIO RECOBRAVEL

IndeferidaInvention Patent

Application data

Number

PI8108539

Type

Invention Patent

Filing

01/05/1981

Publication

10/19/1982

Progress at the INPI

Under appeal
  1. Filing01/05/81
  2. Publication10/19/82
  3. Examination11/27/84
  4. Refused08/04/87
  5. Grant
  6. In force

The application was refused by the INPI on 08/04/1987. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 08/04/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SCHLUMBERGER TECHNOLOGY CORP [US]

Inventors

J. K. (pessoa física)

S. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

08/04/1987

RPI 876

Republicação - classificação IPC

#15.11

08/13/1985

RPI 773

Exigência - art. 36 da LPI

#6.1

05/28/1985

RPI 762

Solicitação de exame técnico

#4.1

11/27/1984

RPI 736

Publicação do pedido de patente

#3.1

10/19/1982

RPI 626

Pedido de patente depositado

#2.1

02/24/1982

RPI 592

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