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Official data from INPI

CAIXA DE TRANSFERENCIA SIMETRICA DE FLEXIBILIDADE MULTIPLA

Em AnáliseInvention Patent

Application data

Number

PI7805344

Type

Invention Patent

Filing

08/18/1978

Publication

-

Progress at the INPI

  1. Filing08/18/78
  2. Publication
  3. Examination
  4. Allowance07/06/82
  5. Grant11/29/83
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 04/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

QT ENG EQUIPAMENTOS SA

Inventors

F. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

04/12/1988

RPI 912

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

11/16/1983

RPI 682

110

09/06/1983

RPI 672

Recurso

#12.1

11/16/1982

RPI 630

Deferimento

#9.1

07/06/1982

RPI 611

14.4

04/06/1982

RPI 598

Exigência - art. 36 da LPI

#6.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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