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Official data from INPI

PROCESSO DE FILTRAGEM E PURIFICAÇÃO DE ALCOOL HIDRATADO

Prazo de SigiloInvention Patent
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Application data

Number

PI8900257

Type

Invention Patent

Filing

01/23/1989

Publication

08/14/1990
View on INPI

Progress at the INPI

Technical opinion to answer
  1. Filing01/23/89
  2. Publication08/14/90
  3. Examination12/01/92
  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: 03/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Norcarbon Indústria e Comércio de Carvão Ativado Ltda

SP, BR

Inventors

K. T. (pessoa física)

BR

Technical data

IPC Classification

C07C 29/76

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

03/07/1989

RPI 959

Retificação

#15.3

01/28/1997

RPI 1365

Conhecimento de parecer técnico

#7.1

10/03/1995

RPI 1296

Retificação

#15.6

10/11/1994

RPI 1245

Alteração de numeração

#15.1

06/07/1994

RPI 1227

Solicitação de exame técnico

#4.1

12/01/1992

RPI 1148

Publicação do pedido de patente

#3.1

08/14/1990

RPI 1028

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