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Official data from INPI

PROCESSO DE ETOXILACAO DE LIGNITA,PRODUTO DE LIGNITA ETOXILADA E COMPOSICAO

Em AnáliseInvention Patent

Application data

Number

PI8500310

Type

Invention Patent

Filing

01/24/1985

Publication

12/03/1985

Progress at the INPI

  1. Filing01/24/85
  2. Publication12/03/85
  3. Examination10/13/87
  4. Allowance
  5. Grant
  6. In force

Published on 12/03/1985, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 10/13/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Baroid Technology, Inc

US

See this company's full portfolio

Inventors

P. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/13/1987

RPI 886

Publicação do pedido de patente

#3.1

12/03/1985

RPI 789

Pedido de patente depositado

#2.1

04/23/1985

RPI 757

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07G 1/00; C08H 5/02.

03/27/2018

RPI 2464

Retificação

#15.3

10/13/1992

RPI 1141

14.1

03/06/1990

RPI 1008

14.7

03/01/1990

RPI 1007

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