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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8105056

Type

Invention Patent

Filing

08/05/1981

Publication

04/20/1982

Progress at the INPI

  1. Filing08/05/81
  2. Publication04/20/82
  3. Examination08/03/82
  4. Allowance09/04/84
  5. Grant03/26/85
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 03/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT

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Inventors

H. R. (pessoa física)

S. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

12/26/1984

RPI 740

Deferimento

#9.1

09/04/1984

RPI 724

Conhecimento de parecer técnico

#7.1

02/21/1984

RPI 696

Solicitação de exame técnico

#4.1

08/03/1982

RPI 615

Publicação do pedido de patente

#3.1

04/20/1982

RPI 600

Carta-patente expirada

#21.1

Patente extinta em 05/08/96

08/19/2008

RPI 1963

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