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Official data from INPI

PROCESSO DE PREPARAÇÃO DE POLITETRAMETILTEREFTALATO

DeferidaInvention Patent

Application data

Number

PI8401295

Type

Invention Patent

Filing

03/16/1984

Publication

11/05/1985

Progress at the INPI

  1. Filing03/16/84
  2. Publication11/05/85
  3. Examination05/20/86
  4. Allowance08/15/89
  5. Grant04/24/90
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 08/15/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhodia S/A

SP, BR

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Inventors

D. G. (pessoa física)

BR

M. W. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

08/15/1989

RPI 982

Exigência - art. 36 da LPI

#6.1

12/06/1988

RPI 946

Solicitação de exame técnico

#4.1

05/20/1986

RPI 813

Publicação do pedido de patente

#3.1

11/05/1985

RPI 785

Pedido de patente depositado

#2.1

05/29/1984

RPI 710

Carta-patente expirada

#21.1

Patente extinta em 16/03/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

04/24/1990

RPI 1015

Notificação para pagamento de retribuição

#13.1

01/02/1990

RPI 1000

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