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Official data from INPI

COMPOSIÇÃO DE RESINA DE POLICARBONATO

Em AnáliseInvention Patent

Application data

Number

PI8700517

Type

Invention Patent

Filing

02/05/1987

Publication

12/08/1987

Progress at the INPI

  1. Filing02/05/87
  2. Publication12/08/87
  3. Examination04/05/88
  4. Allowance10/26/93
  5. Grant05/31/94
  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: 04/05/1988. 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. O. (pessoa física)

JP

N. N. (pessoa física)

JP

T. S. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

22956/1986 · 02/06/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/05/1988

RPI 911

Publicação do pedido de patente

#3.1

12/08/1987

RPI 894

Pedido de patente depositado

#2.1

06/09/1987

RPI 868

Carta-patente expirada

#21.1

Patente extinta em 05/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

10/26/1993

RPI 1195

Exigência - art. 36 da LPI

#6.1

11/05/1991

RPI 1092

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