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Official data from INPI

DISPOSICAO EMBOLO-CILINDRO PARA UM COMPRESSOR

ConcedidaInvention Patent

Application data

Number

PI7803381

Type

Invention Patent

Filing

05/28/1977

Publication

-

Progress at the INPI

  1. Filing05/28/77
  2. Publication
  3. Examination
  4. Allowance07/13/82
  5. Grant11/29/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 11/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. A. (pessoa física)

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Inventors

K. E. (pessoa física)

T. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1983

RPI 684

110

07/26/1983

RPI 666

Recurso

#12.1

11/16/1982

RPI 630

Deferimento

#9.1

07/13/1982

RPI 612

Exigência - art. 36 da LPI

#6.1

12/08/1981

RPI 581

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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