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

COPOLIMERO ELASTOMERICO E COPOLIMERO VULCANIZADO

ConcedidaInvention Patent

Application data

Number

PI7907746

Type

Invention Patent

Filing

11/30/1978

Publication

-

Progress at the INPI

  1. Filing11/30/78
  2. Publication
  3. Examination08/03/82
  4. Allowance11/13/84
  5. Grant05/28/85
  6. Expired05/02/95

The letters patent expired on 05/02/1995: 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: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT

See this company's full portfolio

Inventors

B. A. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Deferimento

#9.1

11/13/1984

RPI 734

Conhecimento de parecer técnico

#7.1

02/21/1984

RPI 696

Solicitação de exame técnico

#4.1

08/03/1982

RPI 615

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

Patent monitoring

Track this patent in real time.

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