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Official data from INPI

PROCESSO E APARELHO PARA ESMERILHAMENTO DE ANÉIS DE PISTÃO..

ConcedidaInvention Patent

Application data

Number

PI7908827

Type

Invention Patent

Filing

09/07/1979

Publication

-

Progress at the INPI

  1. Filing09/07/79
  2. Publication
  3. Examination07/13/82
  4. Allowance12/06/83
  5. Grant05/29/84
  6. Expired05/09/95

The letters patent expired on 05/09/1995: 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: 05/29/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

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Inventors

S. R. (pessoa física)

Technical data

IPC Classification

Priority claims

US

PCT/79/00726 · 09/07/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

03/27/1984

RPI 701

Deferimento

#9.1

12/06/1983

RPI 685

Republicação - classificação IPC

#15.11

07/26/1983

RPI 666

Exigência - art. 36 da LPI

#6.1

05/24/1983

RPI 657

Solicitação de exame técnico

#4.1

07/13/1982

RPI 612

Carta-patente expirada

#21.1

05/09/1995

RPI 1275

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