(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

COMPRESSOR DE POTENCIA VARIAVEL

ConcedidaInvention Patent

Application data

Number

PI7902339

Type

Invention Patent

Filing

04/27/1978

Publication

-

Progress at the INPI

  1. Filing04/27/78
  2. Publication
  3. Examination12/22/81
  4. Allowance08/10/82
  5. Grant02/22/83
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GEN MOTORS CORP

See this company's full portfolio

Inventors

B. D. (pessoa física)

M. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Deferimento

#9.1

08/10/1982

RPI 616

Solicitação de exame técnico

#4.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.