Patent US3607108A successfully refreshed from Google Patents.
US3607108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed holder and growth suppressor assembly for the hydrothermal synthesis of quartz
Assignee: PR HOFFMAN MATERIALS PROCESSING Corp A CORP OF DE
•
Filing: 1967-10-26
•
Granted: 1971-09-21
•
Expires: 1987-10-26
Abstract
Abstract An assembly used for holding quartz seed plates and suppressing growth used in a hydrothermal process of synthetically growing quartz includes a pair of spaced and facing channels for holding flat ends of seed plates and a number of slidable growth suppressor plates held in the channels by tips thereon and extending transverse to the plane of the seed plates. The channels may have removable liners and may be double channels when there are multiple vertical tiers of seeds in an autoclave. A tang on the channel linear prevents the growth suppressor and seed plates from falling out of the channel.
Inventors
- 👤 David Wayne Gehres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:28
CPC Classifications
C; C30; C30B; C30B7/00; C30B29/00; C30B29/10; C30B29/16; C30B29/18; Y; Y10; Y10S; Y10S117/00; Y10S117/901; Y10S117/902; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1096
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
An assembly as in claim 1 wherein each channel member includes a removable channel lining.
Claim 2
Dependent Claim
37 words
An assembly as in claim 2 wherein there are at least two vertically related pairs of channel members in juxtaposition so that at least the common central channel member has channels on both opposite vertical surfaces thereof.
Claim 3
Dependent Claim
31 words
An assembly as defined in claim 3 wherein there are at least two pairs of horizontally related channel members and further comprising members fixedly connecting and horizontally spacing the channel members.
Claim 4
Dependent Claim
37 words
An assembly as defined in claim 4 wherein means to prevent the seeds and growth suppressor plates from sliding out the ends of the channels includes a bendable tang extending from the end of the removable liner.
Claim 5
Dependent Claim
200 words
In a process for hydrothermal synthesis of quartz of the type including positioning a supply of nutrient in a lower portion of a vertical autoclave, holding a plurality of Z cut seed plates in an upper portion of the autoclave, filling over half the autoclave with an aqueous solution of sodium ions, and heating the autoclave for a period of time sufficient to cause growth of quartz on the seeds under conditions of high temperature and pressure, improvements in holding the seeds and suppressing X growth thereon during the hydrothermal synthesis of quartz, the improvements comprising; loosely holding the ends of each seed plate within channels contacting the faces of each seed plate adjacent each end, positioning a number of freely slidable growth suppressor plates in the channel alternate to the positioning of the seed plates to abut the seed plates on the X edge surfaces thereof, the plane of the growth suppressor plates extending transverse to the plane of the seed plates, the number of growth suppressor plates being one greater than the number of seed plates in the channels, and preventing the freely slidable growth suppressor plates and seed plates from sliding out the end of the channel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |