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

APERFEICOAMENTO EM PROCESSO PARA RECUPERAR CLORETOS DE METAL DE UMA MISTURA GASOSA

ConcedidaInvention Patent

Application data

Number

PI7706811

Type

Invention Patent

Filing

10/13/1976

Publication

-

Progress at the INPI

  1. Filing10/13/76
  2. Publication
  3. Examination
  4. Allowance10/23/84
  5. Grant04/30/85
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT

See this company's full portfolio

Inventors

K. A. (pessoa física)

L. D. (pessoa física)

P. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Deferimento

#9.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

12/15/1981

RPI 582

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

Patent monitoring

Track this patent in real time.

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