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Official data from INPI

TRATAMENTO DE POLPA COM OXIGÊNIO

Em AnáliseInvention Patent

Application data

Number

PI8109039

Type

Invention Patent

Filing

09/04/1981

Publication

09/06/1983

Progress at the INPI

Technical opinion to answer
  1. Filing09/04/81
  2. Publication09/06/83
  3. Examination02/26/85
  4. Allowance
  5. Grant
  6. In force

The INPI issued a technical opinion on patentability. The applicant must respond for examination to continue.

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Latest action published by the INPI: 03/08/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Weyerhaeuser Company

US

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Inventors

B. [. (pessoa física)

C. [. (pessoa física)

T. O. (pessoa física)

[. (pessoa física)

Technical data

IPC Classification

Priority claims

US

81/01186 · 09/04/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

03/08/1988

RPI 907

Conhecimento de parecer técnico

#7.1

11/05/1985

RPI 785

Solicitação de exame técnico

#4.1

02/26/1985

RPI 749

Notificação de entrada na fase nacional - PCT

#1.3

09/06/1983

RPI 672

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