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Official data from INPI

Película de poliolefina de camada múltipla.

Em AnáliseInvention Patent

Application data

Number

PI8300635

Type

Invention Patent

Filing

02/09/1983

Publication

11/08/1983

Progress at the INPI

  1. Filing02/09/83
  2. Publication11/08/83
  3. Examination08/20/85
  4. Allowance12/29/87
  5. Grant07/26/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W.R Grace & Co. Conn

US

See this company's full portfolio

Inventors

M. B. (pessoa física)

Technical data

Priority claims

US

350.459 · 02/19/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

08/22/1989

RPI 983

Concessão da patente

#16.1

07/26/1988

RPI 927

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Republicação - classificação IPC

#15.11

04/22/1987

RPI 861

Exigência - art. 36 da LPI

#6.1

11/18/1986

RPI 839

Solicitação de exame técnico

#4.1

08/20/1985

RPI 774

Publicação do pedido de patente

#3.1

11/08/1983

RPI 681

Pedido de patente depositado

#2.1

03/29/1983

RPI 649

Carta-patente expirada

#21.1

Patente extinta em 09/02/98

07/01/2008

RPI 1956

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