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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8301760

Type

Invention Patent

Filing

03/30/1983

Publication

12/13/1983

Progress at the INPI

  1. Filing03/30/83
  2. Publication12/13/83
  3. Examination04/01/86
  4. Allowance04/12/88
  5. Grant01/10/89
  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.

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Latest action published by the INPI: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. C. (pessoa física)

US

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Inventors

B. L. (pessoa física)

K. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/10/1989

RPI 951

Notificação para pagamento de retribuição

#13.1

07/26/1988

RPI 927

Deferimento

#9.1

04/12/1988

RPI 912

Solicitação de exame técnico

#4.1

04/01/1986

RPI 806

Publicação do pedido de patente

#3.1

12/13/1983

RPI 686

Pedido de patente depositado

#2.1

05/24/1983

RPI 657

Carta-patente expirada

#21.1

Patente extinta em 30/03/98

07/01/2008

RPI 1956

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