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Official data from INPI

FLUIDO DE PERFURACAO A BASE DE AGUA

Em AnáliseInvention Patent

Application data

Number

PI8100038

Type

Invention Patent

Filing

01/07/1980

Publication

-

Progress at the INPI

  1. Filing01/07/80
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. In force

The application was filed at the INPI on 01/07/1980. It awaits formal examination and publication in the RPI gazette.

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Latest action published by the INPI: 02/09/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NL INDUSTRIES INC

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

02/09/1988

RPI 903

Pedido de certificado de adição de invenção

#5.1

08/31/1982

RPI 619

Solicitação de exame técnico

#4.1

03/16/1982

RPI 595

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