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Official data from INPI

DETECTOR DE FUGA PARA TROLEIBUS

Em AnáliseInvention Patent

Application data

Number

PI7805003

Type

Invention Patent

Filing

08/17/1977

Publication

-

Progress at the INPI

  1. Filing08/17/77
  2. Publication
  3. Examination
  4. Allowance08/10/82
  5. Grant02/22/83
  6. Expired12/14/93

The letters patent expired on 12/14/1993: 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: 04/15/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ANSALDO SA

Inventors

C. C. (pessoa física)

R. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

04/15/1986

RPI 808

20.11

02/07/1984

RPI 694

20.7

11/08/1983

RPI 681

20.4

11/01/1983

RPI 680

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

12/28/1982

RPI 636

Deferimento

#9.1

08/10/1982

RPI 616

Exigência - art. 36 da LPI

#6.1

01/12/1982

RPI 586

Carta-patente expirada

#21.1

12/14/1993

RPI 1202

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