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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8105711

Type

Invention Patent

Filing

09/04/1981

Publication

05/25/1982

Progress at the INPI

  1. Filing09/04/81
  2. Publication05/25/82
  3. Examination06/12/84
  4. Allowance10/27/87
  5. Grant05/31/88
  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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NAT DISTILLERS CHEM CORP

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Inventors

B. J. (pessoa física)

M. M. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

10/27/1987

RPI 888

Exigência - art. 36 da LPI

#6.1

04/02/1985

RPI 754

Solicitação de exame técnico

#4.1

06/12/1984

RPI 712

Publicação do pedido de patente

#3.1

05/25/1982

RPI 605

Pedido de patente depositado

#2.1

10/20/1981

RPI 574

Carta-patente expirada

#21.1

Patente extinta em 04/09/96

08/19/2008

RPI 1963

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