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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM POLÍMERO DE ÉSTER DE POLIETERIMIDA

PublicadaInvention Patent

Application data

Number

PI8706634

Type

Invention Patent

Filing

12/02/1987

Publication

07/19/1988

Progress at the INPI

  1. Filing12/02/87
  2. Publication07/19/88
  3. Examination11/06/90
  4. Allowance08/01/95
  5. Grant04/30/96
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 07/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Electric Company

US

See this company's full portfolio

Inventors

J. T. (pessoa física)

US

R. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

936699 · 12/02/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/19/1988

RPI 926

Pedido de patente depositado

#2.1

03/29/1988

RPI 910

Carta-patente expirada

#21.1

Patente extinta em 02/12/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

04/30/1996

RPI 1326

Notificação para pagamento de retribuição

#13.1

01/02/1996

RPI 1309

Deferimento

#9.1

08/01/1995

RPI 1287

Exigência - art. 36 da LPI

#6.1

05/25/1993

RPI 1173

Exigência - art. 36 da LPI

#6.1

12/24/1991

RPI 1099

Solicitação de exame técnico

#4.1

11/06/1990

RPI 1040

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