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Official data from INPI

PROCESSO PARA PRODUÇÃO DE ÉTER DE POLIFENILENO

ConcedidaInvention Patent

Application data

Number

PI8400618

Type

Invention Patent

Filing

02/13/1984

Publication

09/18/1984

Progress at the INPI

  1. Filing02/13/84
  2. Publication09/18/84
  3. Examination08/12/86
  4. Allowance11/01/88
  5. Grant09/26/89
  6. Terminated12/24/96

The patent was granted on 09/26/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Borg-Warner Chemicals, Inc.

US

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Inventors

A. S. (pessoa física)

JP

M. R. (pessoa física)

US

W. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

466.746 · 02/15/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

02/21/1989

RPI 957

Deferimento

#9.1

11/01/1988

RPI 941

Exigência - art. 36 da LPI

#6.1

05/10/1988

RPI 916

Solicitação de exame técnico

#4.1

08/12/1986

RPI 825

Publicação do pedido de patente

#3.1

09/18/1984

RPI 726

Pedido de patente depositado

#2.1

04/24/1984

RPI 705

Anuidade - prazo legal encerrado

#18.2

12/24/1996

RPI 1360

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