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Official data from INPI

CALCO COMPRESSIVEL,FLEXIVEL,RESILIENTE,ANULAR,NA FORMA DE UM ANEL

ConcedidaInvention Patent

Application data

Number

PI7900116

Type

Invention Patent

Filing

01/16/1978

Publication

-

Progress at the INPI

  1. Filing01/16/78
  2. Publication
  3. Examination
  4. Allowance08/21/84
  5. Grant03/26/85
  6. Expired05/31/94

The letters patent expired on 05/31/1994: 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: 03/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GOODYEAR TIRE & RUBBER

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Inventors

L. R. (pessoa física)

W. J. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

12/11/1984

RPI 738

Deferimento

#9.1

08/21/1984

RPI 722

Republicação - classificação IPC

#15.11

04/24/1984

RPI 705

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

Republicação - classificação IPC

#15.11

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

08/23/1983

RPI 670

Carta-patente expirada

#21.1

05/31/1994

RPI 1226

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