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Official data from INPI

ADITIVO DE FLUIDO DE PERFURAÇÃO, FLUIDO DE PERFURAÇÃO E PROCESSO PARA A PERFURAÇÃO DE UM POÇO

PublicadaInvention Patent

Application data

Number

PI8900965

Type

Invention Patent

Filing

03/02/1989

Publication

10/24/1989

Progress at the INPI

  1. Filing03/02/89
  2. Publication10/24/89
  3. Abandoned10/09/90
  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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Phillips Petroleum Company

US

See this company's full portfolio

Inventors

B. P. (pessoa física)

Technical data

IPC Classification

Priority claims

US

162.835 · 03/02/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/24/1989

RPI 992

Pedido de patente depositado

#2.1

04/11/1989

RPI 964

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C09K 7/02.

03/20/2018

RPI 2463

Arquivamento - Art. 36 §1° da LPI

#11.2

08/01/1995

RPI 1287

Exigência - art. 36 da LPI

#6.1

09/13/1994

RPI 1241

Solicitação de exame técnico

#4.1

10/09/1990

RPI 1036

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