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

APERFEIÇOAMENTO EM PROCESSO DE HIDRÓLISE ÁCIDA CONTÍNUA DE MATERIAIS CELULÓSICOS

DeferidaInvention Patent

Application data

Number

PI8203026

Type

Invention Patent

Filing

05/24/1982

Publication

01/03/1984

Progress at the INPI

  1. Filing05/24/82
  2. Publication01/03/84
  3. Examination05/14/85
  4. Allowance10/24/89
  5. Grant06/26/90
  6. Terminated11/29/94

The patent was granted on 06/26/1990 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Indústrias Villares S/A

SP, BR

See this company's full portfolio

Inventors

J. G. (pessoa física)

BR

J. M. (pessoa física)

BR

M. G. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

10/24/1989

RPI 992

Conhecimento de parecer técnico

#7.1

11/22/1988

RPI 944

Pedido de certificado de adição de invenção

#5.1

10/22/1985

RPI 783

Solicitação de exame técnico

#4.1

05/14/1985

RPI 760

Publicação do pedido de patente

#3.1

01/03/1984

RPI 689

Pedido de patente depositado

#2.1

07/13/1982

RPI 612

Anuidade - prazo legal encerrado

#18.2

11/29/1994

RPI 1252

Concessão da patente

#16.1

06/26/1990

RPI 1024

Notificação para pagamento de retribuição

#13.1

03/01/1990

RPI 1007

Patent monitoring

Track this patent in real time.

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