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Official data from INPI

MISTURA DE MATERIAIS USADA NO FRATURAMENTO HIDRAULICO DE FORMACOES GEOLOGICAS

Em ExigênciaInvention Patent
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Application data

Number

PI8504068

Type

Invention Patent

Filing

08/26/1985

Publication

03/31/1987
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Progress at the INPI

  1. Filing08/26/85
  2. Publication03/31/87
  3. Abandoned06/23/87
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SODEFIM SOCIEDADE DE DESENVOLV [BR]

Inventors

A. D. (pessoa física)

S. J. (pessoa física)

Technical data

IPC Classification

E21B 43/267

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

05/30/1989

RPI 971

Pedido de certificado de adição de invenção

#5.1

09/29/1987

RPI 884

Solicitação de exame técnico

#4.1

06/23/1987

RPI 870

Publicação do pedido de patente

#3.1

03/31/1987

RPI 858

Pedido de patente depositado

#2.1

04/22/1986

RPI 809

Arquivamento - Art. 36 §1° da LPI

#11.2

01/23/1990

RPI 1003

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