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Official data from INPI

MÉTODO DE PREPARAÇÃO DE POLIETILENOS

PublicadaInvention Patent

Application data

Number

PI8701878

Type

Invention Patent

Filing

04/21/1987

Publication

02/17/1988

Progress at the INPI

  1. Filing04/21/87
  2. Publication02/17/88
  3. Examination09/11/90
  4. Allowance01/21/92
  5. Grant10/27/92
  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: 02/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Enichem Anic S.p.A.

IT

Inventors

A. B. (pessoa física)

IT

F. M. (pessoa física)

IT

M. M. (pessoa física)

IT

R. I. (pessoa física)

IT

Technical data

IPC Classification

Priority claims

IT

20123-A/86 · 04/17/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/17/1988

RPI 904

Pedido de patente depositado

#2.1

07/28/1987

RPI 875

Carta-patente expirada

#21.1

Patente extinta em 21/04/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/27/1992

RPI 1143

Notificação para pagamento de retribuição

#13.1

06/09/1992

RPI 1123

Deferimento

#9.1

01/21/1992

RPI 1103

14.1

07/09/1991

RPI 1075

Solicitação de exame técnico

#4.1

09/11/1990

RPI 1032

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