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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8306823

Type

Invention Patent

Filing

12/12/1983

Publication

07/31/1984

Progress at the INPI

  1. Filing12/12/83
  2. Publication07/31/84
  3. Examination08/12/86
  4. Allowance09/08/87
  5. Grant06/28/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

Inventors

D. G. (pessoa física)

S. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Deferimento

#9.1

09/08/1987

RPI 881

Solicitação de exame técnico

#4.1

08/12/1986

RPI 825

Publicação do pedido de patente

#3.1

07/31/1984

RPI 719

Pedido de patente depositado

#2.1

02/21/1984

RPI 696

Carta-patente expirada

#21.1

Patente extinta em 12/12/98

07/01/2008

RPI 1956

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