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

APERFEICOAMENTO EM PROCESSO DE OSCILACAO DE PRESSAO ADIABATICA

ConcedidaInvention Patent

Application data

Number

PI7604261

Type

Invention Patent

Filing

11/07/1975

Publication

-

Progress at the INPI

  1. Filing11/07/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant02/22/83
  6. Terminated05/07/91

The patent was granted on 02/22/1983 and later terminated for failure to pay the annuities. The technology is in the public domain 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

UNION CARBIDE CORP

See this company's full portfolio

Inventors

F. A. (pessoa física)

R. E. (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

11.8

12/14/1982

RPI 634

Anuidade - prazo legal encerrado

#18.2

05/07/1991

RPI 1066

Patent monitoring

Track this patent in real time.

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