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

PROCESSO PARA A PREPARAÇÃO DE UM POLIBUTENO VISCOSO,E, PROCESSO PARA A PREPARAÇÃO DE UM ANIDRIDO INTRAMOLECULAR SATURADO SUBSTITUIDO COM POLIBUTENILA

PublicadaInvention Patent

Application data

Number

PI8806789

Type

Invention Patent

Filing

12/21/1988

Publication

08/29/1989

Progress at the INPI

  1. Filing12/21/88
  2. Publication08/29/89
  3. Examination07/30/91
  4. Allowance09/26/95
  5. Grant04/30/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 08/29/1989. 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

G. G. (pessoa física)

US

J. E. (pessoa física)

US

R. L. (pessoa física)

US

Technical data

Priority claims

US

136,867 · 12/22/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/29/1989

RPI 984

Pedido de patente depositado

#2.1

04/25/1989

RPI 966

Carta-patente expirada

#21.1

Patente extinta em 21/12/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/30/1996

RPI 1326

Deferimento

#9.1

09/26/1995

RPI 1295

Exigência - art. 36 da LPI

#6.1

10/11/1994

RPI 1245

Solicitação de exame técnico

#4.1

07/30/1991

RPI 1078

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.