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Official data from INPI

PROCESSO APERFEICOADO PARA A PREPARACAO DE PRODUTO POLIMERICO CLORADO

ConcedidaInvention Patent

Application data

Number

PI7705004

Type

Invention Patent

Filing

07/29/1977

Publication

-

Progress at the INPI

  1. Filing07/29/77
  2. Publication
  3. Examination
  4. Allowance06/05/84
  5. Grant12/26/84
  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: 12/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ICI LTD

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Inventors

P. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/26/1984

RPI 740

Notificação para pagamento de retribuição

#13.1

10/02/1984

RPI 728

Deferimento

#9.1

06/05/1984

RPI 711

Exigência - art. 36 da LPI

#6.1

11/01/1983

RPI 680

Exigência - art. 36 da LPI

#6.1

03/15/1983

RPI 647

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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