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Official data from INPI

PROCESSO PARA A FABRICACAO DE UM CILINDRO ESTRIADO E CILINDRO ESTRIADO ASSIM PRODUZIDO

ConcedidaInvention Patent

Application data

Number

PI7800551

Type

Invention Patent

Filing

02/02/1977

Publication

-

Progress at the INPI

  1. Filing02/02/77
  2. Publication
  3. Examination
  4. Allowance09/27/83
  5. Grant03/27/84
  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: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KUESTERS E

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Inventors

A. V. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

01/17/1984

RPI 691

Deferimento

#9.1

09/27/1983

RPI 675

Exigência - art. 36 da LPI

#6.1

03/15/1983

RPI 647

Conhecimento de parecer técnico

#7.1

08/10/1982

RPI 616

6.2

01/26/1982

RPI 588

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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