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

PROCESSO DE PRODUÇÃO DE CICLOHEXANONA ATRAVÉS DA DESIDROGENAÇÃO CATALÍTICA DE CICLOHEXANOL EM FASE VAPOR

Prazo de SigiloInvention Patent

Application data

Number

PI8903471

Type

Invention Patent

Filing

07/14/1989

Publication

01/15/1991

Progress at the INPI

  1. Filing07/14/89
  2. Publication01/15/91
  3. Examination08/13/91
  4. Allowance04/11/00
  5. Grant10/02/01
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 09/19/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Nitrocarbono S/A

BA, BR

Inventors

C. D. (pessoa física)

BR

J. P. (pessoa física)

BR

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

09/19/1989

RPI 987

Carta-patente expirada

#21.1

Patente extinta em 02/10/2011

12/26/2012

RPI 2190

Concessão da patente

#16.1

10/02/2001

RPI 1604

Deferimento

#9.1

04/11/2000

RPI 1527

11.14

Referente a RPI 1413 de 30/12/97

02/08/2000

RPI 1518

11.31

01/21/1998

RPI 1413

Exigência - art. 36 da LPI

#6.1

09/17/1996

RPI 1346

Solicitação de exame técnico

#4.1

08/13/1991

RPI 1080

Publicação do pedido de patente

#3.1

01/15/1991

RPI 1050

Patent monitoring

Track this patent in real time.

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