Non-member submission from [vashishi@erols.com]
To: Ted.Baldwin@Equistarchem.com, owner-piug-l@tecc.co.uk
cc: (bcc: William M Murray/AE/DuPont)
Subject: Re: Brookhart (UNC & Dow) patent ??
At 10:03 AM 11/1/00 -0600, you wrote:
>Hi all -
>
>I was asked to find the patent # for the famous Brookhart patent on
>late-transition metal catalysts for polyethylene from Dow and the
>University
>of North Carolina. The patent (maybe application?) had over 500 claims and
>was the largest patent issued to Dow. I came across Dow's US 5,866,663
>(authored by Brookhart et al.), which has 309 claims and 537 examples
>listed
>in part of the description, so I am thinking there may be other related
>patents and this is more complicated than I originally thought. I was
>hoping someone was familiar with this patent and could direct me to the
>correct number(s).
>
>Thanks - Ted
>
>*******************************
>Ted Baldwin
>ETC Information Center
>Equistar Chemicals
>513.530.4046
>513.530.4401 (fax)
>
>
After my comments is a DUPONT news release (not Dow) which makes a reference
to "in 1995 the largest patent in its history" Inventor Brookhart with
DuPont and UNC as assignees.
There are 11 patents issued to inventor Brookhart and DuPont It appears that
there may have been a 500 claim APPLICATION BUT that through
continuation-in-part and then "divisional" whatever claims were in the
original applications were divided into "divisional" applications (fairly
common with large number of claims) and then issued as separate patents.
And since original filed in 1995, possible some of the pieces of the
original still haven't been issued. If you look at 6,140,439 --it issued
yesterday! (Oct. 31, 2000) as a Division of Ser No. 590,650, Jan. 24, 1996,
Pat. No. 5,880,241, which is a continuation-in-part of Ser. No. 473,590,
Jun. 7, 1995, abandoned, which is a continuation-in-part of Ser. No.
415,283, Apr. 3, 1995, abandoned, which is a continuation-in-part of Ser.
No. 378,044, Jan. 24, 1995, abandoned.
The one you refer to US 5,866,663 which issued with 309 claims also goes
back to application 378,044 so it appears that you may well be correct in
that the APPLICATION had 500+ claims
Valerie Darbe vashishi@erols.com
http://www.dupont.com/corp/whats-new/releases/98/980402.html
>[DuPont News]
>
> Dallas, Texas: Four DuPont Scientists Honored by the
> American Chemical Society
>
> WILMINGTON, Del., April 2 Four DuPont scientists,
> including Chief Technology Officer Joseph A. Miller, Jr.,
> were honored by the American Chemical Society at its
> national meeting this week in Dallas, Texas. Honorees are:
>
> * Alan D. English, who received the award in Applied
> Polymer Science;
> * Lynda K. Johnson, who received the award for
> Cooperative Research in Polymer Science and
> Engineering along with Dr. Maurice Brookhart of the
> University of North Carolina (UNC);
> * William C. Drinkard, Jr., who received the Award in
> Industrial Chemistry; and
> * Joseph A. Miller, Jr. who received the Earle B.
> Barnes Award for Leadership in Chemical Research
> Management.
>
> English, a research fellow in DuPont Central Research &
> Development, received his award in recognition of his work
> in developing a better understanding of the connection
> between the microscopic structure and dynamics of polymers
> and their macroscopic properties, and how to modify those
> properties to improve various polymeric materials. His
> research has spanned many of DuPont's best-known products,
> including Teflon fluoropolymer resins, Zytel nylon
> resin, Kevlar brand fiber, Mylar polyester film and
> Dacron polyester fiber.
>
> Johnson is currently a senior research chemist in DuPont
> Central Research & Development. While a postdoctoral
> student with Dr. Brookhart, she developed with him the
> novel catalysts now known as Versipol(TM) late transition
> metal catalysts for the polymerization of unique forms of
> olefins. Materials resulting from these catalysts have the
> potential to be used in applications such as packaging,
> engineering and industrial polymers. On the basis of the
> work performed at UNC, which was funded by DuPont, the
> company filed in 1995 the largest patent in its history.
>
> Drinkard, who retired from DuPont in 1979, was honored for
> his invention of the catalytic hydrocyanation process to
> make adiponitrile, a key ingredient for nylon. This
> process requires 45 percent less energy than the one it
> replaced and eliminated several hazardous ingredients and
> process steps. It remains the basis of adiponitrile
> production today, 30 years after its development.
>
> Miller, chief technology officer and senior vice
> president-research & development, received his award in
> recognition of outstanding achievements in research
> direction. In particular, Miller was cited for his strong
> support of fundamental research in the face of pressures
> to shrink all but short-term efforts, and his advocacy of
> a balanced portfolio of research to support short- and
> long-term business growth.
>
> DuPont is a research and technology-based global chemical,
> energy and life sciences company offering high-performance
> products based on chemicals, polymers, fibers and
> petroleum.
>
> # # #
> 4/2/98
>From: "Baldwin, Ted W." <Ted.Baldwin@Equistarchem.com>
>To: piug-l@derwent.tecc.co.uk
>Subject: Brookhart (UNC & Dow) patent ??
>Date: Wed, 1 Nov 2000 10:03:47 -0600
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>
>Hi all -
>
>I was asked to find the patent # for the famous Brookhart patent on
>late-transition metal catalysts for polyethylene from Dow and the
>University
>of North Carolina. The patent (maybe application?) had over 500 claims and
>was the largest patent issued to Dow. I came across Dow's US 5,866,663
>(authored by Brookhart et al.), which has 309 claims and 537 examples
>listed
>in part of the description, so I am thinking there may be other related
>patents and this is more complicated than I originally thought. I was
>hoping someone was familiar with this patent and could direct me to the
>correct number(s).
>
>Thanks - Ted
>
>*******************************
>Ted Baldwin
>ETC Information Center
>Equistar Chemicals
>513.530.4046
>513.530.4401 (fax)
>
PLEASE SEND PIUG-L SYSOP REPLIES TO: William.M.Murray@USA.dupont.com
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