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

PROCESSO PARA A PREPARAÇÃO DE POLI-n-BUTENO DE BAIXO PESO MOLECULAR

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905449

Type

Invention Patent

Filing

10/25/1989

Publication

05/29/1990

Progress at the INPI

  1. Filing10/25/89
  2. Publication05/29/90
  3. Examination06/09/92
  4. Allowance08/18/98
  5. Grant12/29/98
  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: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents, Inc

US

See this company's full portfolio

Inventors

F. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

262,919 · 10/26/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 25/10/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

DEFERIDO DE ACORDO COM O ARTIGO 229 DA LEI 9279 DE 14/05/96

08/18/1998

RPI 1443

Exigência - art. 36 da LPI

#6.1

07/18/1995

RPI 1285

Solicitação de exame técnico

#4.1

06/09/1992

RPI 1123

Publicação do pedido de patente

#3.1

05/29/1990

RPI 1020

Pedido de patente depositado

#2.1

03/01/1990

RPI 1007

Related

From the same holder

Patent monitoring

Track this patent in real time.

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