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Official data from INPI

PROCESSO PARA PRODUÇÃO DE POLICARBONATO

Prazo de SigiloInvention Patent

Application data

Number

PI8902031

Type

Invention Patent

Filing

04/28/1989

Publication

04/10/1990

Progress at the INPI

  1. Filing04/28/89
  2. Publication04/10/90
  3. Examination11/27/90
  4. Allowance06/27/95
  5. Grant02/27/96
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 06/13/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Idemitsu Petrochemical CO, LTD

JP

See this company's full portfolio

Inventors

K. Y. (pessoa física)

JP

N. K. (pessoa física)

JP

T. A. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

106806/88 · 04/29/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

06/13/1989

RPI 973

Carta-patente expirada

#21.1

Patente extinta em 28/04/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

02/27/1996

RPI 1317

Notificação para pagamento de retribuição

#13.1

11/07/1995

RPI 1301

Deferimento

#9.1

06/27/1995

RPI 1282

Exigência - art. 36 da LPI

#6.1

09/27/1994

RPI 1243

Solicitação de exame técnico

#4.1

11/27/1990

RPI 1043

Publicação do pedido de patente

#3.1

04/10/1990

RPI 1013

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