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Official data from INPI

PROCESSO PARA PRODUCAO CONTINUA DE HOMOPOLIMEROS,COPOLIMEROS OU POLIMEROS DE ENXERTO DE CLORETO DE VINILA EM EMULSAO AQUOSA,E DI POSITIVO PARA SUA EXECUCAO

Concessão AnuladaInvention Patent

Application data

Number

PI7703569

Type

Invention Patent

Filing

06/04/1976

Publication

05/31/1983

Progress at the INPI

  1. Filing06/04/76
  2. Publication05/31/83
  3. Examination
  4. Allowance01/25/83
  5. Grant06/28/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/30/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HOECHST AG

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Inventors

H. C. (pessoa física)

K. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

08/30/1983

RPI 671

Concessão da patente

#16.1

06/28/1983

RPI 662

Publicação do pedido de patente

#3.1

05/31/1983

RPI 658

Deferimento

#9.1

01/25/1983

RPI 640

Republicação - classificação IPC

#15.11

11/30/1982

RPI 632

Exigência - art. 36 da LPI

#6.1

08/17/1982

RPI 617

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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