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

PROCESSO PARA PRODUCAO DE MISTURAS DE POLIAMINAS DA SERIE POLIAMINO-POLIARIL-POLIMETILENO

ConcedidaInvention Patent

Application data

Number

PI8001033

Type

Invention Patent

Filing

02/21/1979

Publication

-

Progress at the INPI

  1. Filing02/21/79
  2. Publication
  3. Examination01/18/83
  4. Allowance06/26/84
  5. Grant12/26/84
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 12/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

BAYER AG

MOBAY CHEMICAL CORP

See this company's full portfolio

Inventors

D. K. (pessoa física)

K. H. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/26/1984

RPI 740

Notificação para pagamento de retribuição

#13.1

10/23/1984

RPI 731

Deferimento

#9.1

06/26/1984

RPI 714

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

Solicitação de exame técnico

#4.1

01/18/1983

RPI 639

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

Patent monitoring

Track this patent in real time.

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