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Official data from INPI

ENVOLTORIOS DE PNEUMATICOS

Em AnáliseInvention Patent

Application data

Number

PI7800460

Type

Invention Patent

Filing

01/25/1977

Publication

-

Progress at the INPI

  1. Filing01/25/77
  2. Publication
  3. Examination
  4. Allowance09/08/82
  5. Grant05/31/83
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 11/22/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MICHELIN & CIE

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Inventors

D. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

11/22/1988

RPI 944

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

09/08/1982

RPI 620

Exigência - art. 36 da LPI

#6.1

03/09/1982

RPI 594

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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