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Official data from INPI

Aperfeiçoamento em freio a tambor de sapata de expansão.

ConcedidaInvention Patent

Application data

Number

PI8303065

Type

Invention Patent

Filing

06/07/1983

Publication

01/31/1984

Progress at the INPI

  1. Filing06/07/83
  2. Publication01/31/84
  3. Examination11/18/86
  4. Allowance03/01/88
  5. Grant12/27/88
  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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. B. (pessoa física)

SP, BR

Inventors

U. A. (pessoa física)

Technical data

IPC Classification

Priority claims

US

385.731 · 06/07/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1988

RPI 949

14.7

08/30/1988

RPI 932

Notificação para pagamento de retribuição

#13.1

06/21/1988

RPI 922

Deferimento

#9.1

03/01/1988

RPI 906

Pedido de certificado de adição de invenção

#5.1

02/03/1987

RPI 850

Solicitação de exame técnico

#4.1

11/18/1986

RPI 839

8.1

04/29/1986

RPI 810

Publicação do pedido de patente

#3.1

01/31/1984

RPI 693

Pedido de patente depositado

#2.1

07/19/1983

RPI 665

Carta-patente expirada

#21.1

Patente extinta em 07/06/98

07/01/2008

RPI 1956

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