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Official data from INPI

PROCESSO PARA PRODUZIR UMA PELÍCULA DE BARREIRA DE OXIGÊNIO

PublicadaInvention Patent

Application data

Number

PI8706314

Type

Invention Patent

Filing

11/23/1987

Publication

07/19/1988

Progress at the INPI

  1. Filing11/23/87
  2. Publication07/19/88
  3. Examination09/25/90
  4. Allowance08/23/94
  5. Grant04/25/95
  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

Cryovac , INC.

US

W.R. Grace & Co. - Conn

US

See this company's full portfolio

Inventors

H. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

934.581 · 11/25/1986

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

03/08/1988

RPI 907

Carta-patente expirada

#21.1

Patente extinta em 23/11/2002

07/29/2008

RPI 1960

Transferência deferida

#25.1

Transferido de: W.R. Grace & Co. - Conn

06/26/2001

RPI 1590

Concessão da patente

#16.1

04/25/1995

RPI 1273

Notificação para pagamento de retribuição

#13.1

12/20/1994

RPI 1255

Deferimento

#9.1

08/23/1994

RPI 1238

Exigência - art. 36 da LPI

#6.1

03/29/1994

RPI 1217

14.4

04/30/1991

RPI 1065

Solicitação de exame técnico

#4.1

09/25/1990

RPI 1034

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