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Official data from INPI

PRCESSO E MAQUINA PARA POLIMENTO DE PECAS E DE ANEIS DE PISTAO

Em AnáliseInvention Patent

Application data

Number

PI7902549

Type

Invention Patent

Filing

04/25/1979

Publication

-

Progress at the INPI

  1. Filing04/25/79
  2. Publication
  3. Examination
  4. Allowance04/06/82
  5. Grant
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 07/27/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DANA CORP

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

07/27/1982

RPI 614

Deferimento

#9.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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