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Official data from INPI

MONOFILAMENTOS E CERDAS DE HOMOPOLÍMEROS OU COPOLÍMEROS DE ACRILONITRILA E PROCESSO PARA SUA PRODUÇÃO.

ConcedidaInvention Patent

Application data

Number

PI8500775

Type

Invention Patent

Filing

02/22/1985

Publication

10/08/1985

Progress at the INPI

  1. Filing02/22/85
  2. Publication10/08/85
  3. Examination08/11/87
  4. Allowance01/10/89
  5. Grant09/26/89
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. A. (pessoa física)

DE

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Inventors

D. H. (pessoa física)

DE

D. F. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P3406910.0 · 02/25/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

05/30/1989

RPI 971

Deferimento

#9.1

01/10/1989

RPI 951

Solicitação de exame técnico

#4.1

08/11/1987

RPI 877

Publicação do pedido de patente

#3.1

10/08/1985

RPI 781

Pedido de patente depositado

#2.1

05/14/1985

RPI 760

Carta-patente expirada

#21.1

Patente extinta em 22/02/2000

07/15/2008

RPI 1958

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