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Official data from INPI

PROCESSO PARA PREPARACAO E PARA ECONOMIZAR ENERGIA DURANTE A PREPARACAO DE CLORETO DE VINIL A PARTIR DE DICLORETO DE ETILENO

Em AnáliseInvention Patent

Application data

Number

PI8306741

Type

Invention Patent

Filing

12/08/1982

Publication

07/17/1984

Progress at the INPI

  1. Filing12/08/82
  2. Publication07/17/84
  3. Examination08/12/86
  4. Refused04/23/91
  5. Grant
  6. In force

The application was refused on 04/23/1991 and the appeal did not change the decision. The invention was never patented and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/18/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STAUFFER CHEMICAL CO [US]

See this company's full portfolio

Inventors

B. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

11/18/1986

RPI 839

Solicitação de exame técnico

#4.1

08/12/1986

RPI 825

Publicação do pedido de patente

#3.1

07/17/1984

RPI 717

Pedido de patente depositado

#2.1

02/21/1984

RPI 696

111

04/23/1991

RPI 1064

Petição de recurso

#12.2

10/16/1990

RPI 1037

Indeferimento

#9.2

06/19/1990

RPI 1023

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