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Official data from INPI

FILME METALIZADO, E, PROCESSO PARA PRODUÇÃO DE UM FILME METALIZADO

Prazo de SigiloInvention Patent

Application data

Number

PI8903050

Type

Invention Patent

Filing

06/22/1989

Publication

02/06/1990

Progress at the INPI

  1. Filing06/22/89
  2. Publication02/06/90
  3. Examination04/14/92
  4. Allowance11/05/96
  5. Grant08/26/97
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 08/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E.I. Du Pont de Nemours AND Company

US

Imperial Chemical Industries Plc.

GB

See this company's full portfolio

Inventors

C. H. (pessoa física)

GB

Technical data

Priority claims

GB

8814789.7 · 06/22/1988

GB

8912896.1 · 06/05/1989

US

263.257 · 10/27/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

08/08/1989

RPI 981

Carta-patente expirada

#21.1

Patente extinta em 22/06/2009

05/21/2013

RPI 2211

Transferência deferida

#25.1

Transferido de: Imperial Chemical Industries PLC

05/11/1999

RPI 1479

Concessão da patente

#16.1

08/26/1997

RPI 1395

Deferimento

#9.1

11/05/1996

RPI 1353

Exigência - art. 36 da LPI

#6.1

03/19/1996

RPI 1320

Solicitação de exame técnico

#4.1

04/14/1992

RPI 1115

Publicação do pedido de patente

#3.1

02/06/1990

RPI 1005

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