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Official data from INPI

PROCESSO DE PREPARAÇÃO DE POLIAMIDAS DE ALTO PESO MOLECULAR.

Em AnáliseInvention Patent

Application data

Number

PI8100600

Type

Invention Patent

Filing

01/30/1981

Publication

11/03/1981

Progress at the INPI

  1. Filing01/30/81
  2. Publication11/03/81
  3. Examination02/02/82
  4. Allowance04/16/85
  5. Grant10/29/85
  6. Expired03/19/96

The letters patent expired on 03/19/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 01/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhodia S/A

SP, BR

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Inventors

W. M. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

18.8

01/03/1989

RPI 950

Anuidade - prazo legal encerrado

#18.2

11/16/1988

RPI 943

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

08/06/1985

RPI 772

Deferimento

#9.1

04/16/1985

RPI 756

Exigência - art. 36 da LPI

#6.1

07/03/1984

RPI 715

Solicitação de exame técnico

#4.1

02/02/1982

RPI 589

Publicação antecipada

#3.2

11/03/1981

RPI 576

Carta-patente expirada

#21.1

03/19/1996

RPI 1320

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