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

ELEMENTO DE ELETRODO, CÉLULA ELETROLÍTICA E MÉTODO PARA PREPARAÇÃO DE UM ELEMENTO ANÓDICO

ConcedidaInvention Patent

Application data

Number

PI8307435

Type

Invention Patent

Filing

06/27/1983

Publication

07/17/1984

Progress at the INPI

  1. Filing06/27/83
  2. Publication07/17/84
  3. Examination03/04/86
  4. Allowance05/16/89
  5. Grant11/28/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

B. J. (pessoa física)

US

B. N. (pessoa física)

US

D. D. (pessoa física)

US

S. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

395.404 · 07/06/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/12/1989

RPI 986

Deferimento

#9.1

05/16/1989

RPI 969

Exigência - art. 36 da LPI

#6.1

10/11/1988

RPI 938

Solicitação de exame técnico

#4.1

03/04/1986

RPI 802

Notificação de entrada na fase nacional - PCT

#1.3

07/17/1984

RPI 717

Carta-patente expirada

#21.1

Patente extinta em 27/06/98

07/01/2008

RPI 1956

Patent monitoring

Track this patent in real time.

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