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Official data from INPI

APERFEIÇOAMENTOS EM EMBREAGEM PNEUMÁTICA COM CÂMARA DE AR COMPRIMIDO

ConcedidaInvention Patent

Application data

Number

PI8000180

Type

Invention Patent

Filing

01/09/1980

Publication

-

Progress at the INPI

  1. Filing01/09/80
  2. Publication
  3. Examination
  4. Allowance02/21/84
  5. Grant09/25/84
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Unitec Transmissões, Equipamentos e Sinterização Ltda.

SP, BR

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Inventors

S. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/21/1984

RPI 696

Exigência - art. 36 da LPI

#6.1

09/27/1983

RPI 675

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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