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Official data from INPI

PROCESSO E APARELHO PARA PERFURAR FORMACOES TERRESTRES EM VOLTA DE UM FURO DE POCO

Em AnáliseInvention Patent

Application data

Number

PI8301896

Type

Invention Patent

Filing

04/16/1982

Publication

12/20/1983

Progress at the INPI

  1. Filing04/16/82
  2. Publication12/20/83
  3. Examination03/11/86
  4. Refused12/12/89
  5. Grant
  6. In force

The application was refused on 12/12/1989 and the appeal did not change the decision. The invention was never patented and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SCHLUMBERGER TECHNOLOGY CORP [US]

Inventors

U. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

111

12/12/1989

RPI 999

Petição de recurso

#12.2

04/11/1989

RPI 964

Indeferimento

#9.2

12/27/1988

RPI 949

15.19

12/15/1987

RPI 895

Retificação

#15.3

09/08/1987

RPI 881

Conhecimento de parecer técnico

#7.1

08/18/1987

RPI 878

Solicitação de exame técnico

#4.1

03/11/1986

RPI 803

Publicação do pedido de patente

#3.1

12/20/1983

RPI 687

Pedido de patente depositado

#2.1

05/31/1983

RPI 658

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