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

CATODO,PROCESSO PARA SUA PRODUCAO,E APERFEICOAMENTOS EM CELULA PARA ELETROLISE DE HALO-ALCALI E EM ELETROLISADOR DE AGUA

Em AnáliseInvention Patent

Application data

Number

PI7606050

Type

Invention Patent

Filing

02/04/1977

Publication

-

Progress at the INPI

  1. Filing02/04/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/25/82
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 03/11/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DIAMOND SHAMROCK CORP

See this company's full portfolio

Inventors

B. J. (pessoa física)

M. I. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

03/11/1986

RPI 803

20.7

03/11/1986

RPI 803

20.4

03/04/1986

RPI 802

20.4

02/18/1986

RPI 800

Concessão da patente

#16.1

05/25/1982

RPI 605

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

Patent monitoring

Track this patent in real time.

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